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Sun protection can reduce skin cancer development in kidney transplant recipients, who have a greater risk of developing squamous cell carcinoma than the general population.
A culturally sensitive sun-protection program (SunProtect) was created in English and Spanish with the option of choosing audio narration provided by the tablet computer (Samsung Galaxy Tab 2 10.1). The intervention, which showed skin cancer on patients with various skin tones, explained the following scenarios: skin cancer risk, the ability of sun protection to reduce this risk, as well as offered sun-protection choices. The length of the intervention was limited to the time usually spent waiting during a visit to the nephrologist.
The development of this culturally sensitive, electronic, interactive sun-protection educational program, SunProtect, was guided by the “transtheoretical model,” which focuses on decision making influenced by perceptions of personal risk or vulnerability to a health threat, importance (severity) of the disease, and benefit of sun-protection behavior. Transportation theory, which holds that narratives can have uniquely persuasive effects in overcoming preconceived beliefs and cognitive biases because people transported into a narrative world will alter their beliefs based on information, claims, or events depicted, guided the use of testimonials. Participant tablet use was self-directed. Self-reported responses to surveys were entered into the database through the tablet. Usability was tested through interviews. A randomized controlled pilot trial with 170 kidney transplant recipients was conducted, where the educational program (SunProtect) was delivered through a touch-screen tablet to 84 participants.
The study involved 62 non-Hispanic white, 60 non-Hispanic black, and 48 Hispanic/Latino kidney transplant recipients. The demographic survey data showed no significant mean differences between the intervention and control groups in age, sex, income, or time since transplantation. The mean duration of program use varied by the ethnic/racial group, with non-Hispanic whites having the shortest use (23 minutes) and Hispanic/Latinos having the longest use (42 minutes). Knowledge, awareness of skin cancer risk, willingness to change sun protection, and use of sun protection increased from baseline to 2 weeks after the program in participants from all ethnic/racial groups in comparison with controls (
Educational program with a tablet computer during the kidney transplant recipients’ 6- or 12-month follow-up visits to the transplant nephrologist improved sun protection in all racial/ethnic groups. Tablets may be used to provide patient education and reduce the physician’s burden of educating and training patients.
ClinicalTrials.gov NCT01646099; https://clinicaltrials.gov/ct2/show/NCT01646099
Sun protection is important for kidney transplant recipients, as they have a 20- to 100-time greater risk of developing squamous cell carcinoma (SCC) than the general population [
Although non-Hispanic white kidney transplant recipients with skin that sunburns easily and tans poorly have the greatest risk of developing SCC, SCC also occurs in many Hispanic/Latinos and non-Hispanic blacks [
The development of this culturally sensitive, electronic, interactive sun-protection educational program, SunProtect, was guided by the transtheoretical model, which focuses on decision making influenced by perceptions of personal risk or vulnerability to a health threat, importance (severity) of the disease, and benefit of a behavior to the health outcome [
SunProtect was particularly developed for patients with lower health literacy and from racially/ethnically diverse backgrounds, which is especially important given that minorities comprise 42% of living kidney transplant recipients in the United States [
Introduction to the program showed the range of ethnicities and races.
Kidney transplant recipients from 2 urban Chicago programs, Northwestern Medicine and University of Illinois at Chicago, were eligible for participation in the study if they met the following inclusion criteria: (1) had received a kidney transplantation within the past 2-24 months, (2) spoke and read English or Spanish, (3) aged between 18 and 70 years, (4) could see well enough to read a newspaper, (5) lived in the greater Chicago area, and (6) self-identified as non-Hispanic white, non-Hispanic black, or Hispanic Latino. Patients were excluded from the study if they had a previous self-reported history of skin cancer as verified in their medical record, previously participated in sun-protection educational research conducted by this research team, a history of dermatologic disease treated with ultraviolet light (eg, psoriasis, atopic dermatitis), and were under the care of a dermatologist within the last 5 years.
Research coordinators recruited potential participants by calling them (over telephone) 1 week before their scheduled appointment with the transplant nephrologist. Patients were told about the sun-protection educational study and asked if they were interested in participating during their visit to the transplant nephrologist and 2 weeks later by telephone.
Accrual was purposefully stratified to obtain representation of all 3 ethnic/racial groups. Written consent was obtained by a research assistant. From mid-May to mid-July 2014, consenting participants used a tablet to complete an online self-report pretest survey in the physicians’ offices. Immediately after completing the pretest, participants were randomized using a random allocation sequence for each ethnic/racial group (1:1) to receive SunProtect, an educational sun-protection program, or to be in the control group. The control group received general skin care information. The software program gave the participants their allocation, and thus, the kidney transplant recipients were not blinded to their condition. Two weeks later, participants were called by a research assistant, who did not enroll the kidney transplant recipient and was blinded to their condition, and asked to respond to the same sun-protection survey questions used in the pretest. The Institutional Review Boards of Northwestern University and the University of Illinois Hospital and Health Sciences System approved the study and participants were compensated for study participation.
SunProtect was derived from an educational sun-protection workbook created and used in our prior research [
Text screens (n=36) were evaluated with the Flesch-Kincaid test to assure that the grade level did not exceed 6th-grade reading level. SunProtect had an introductory section in which program navigation was demonstrated, and the language (English or Spanish) and audio guide were selected by touching one of the following 4 images: non-Hispanic white woman, Hispanic Latino woman, Hispanic Latino man, or non-Hispanic black man. The topics of 8 sequential chapters were as follows: importance of sun protection, skin cancer, risk of developing skin cancer, ways people get sun exposure, choices of sun protection, frequently asked questions about sunscreen, protective clothing, and personalized sun-protection recommendations (
SunProtect content.
Chapter | Screen |
Supplemental content | |
Photographs |
Video and testimonials title |
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Navigation | 1 |
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Select language + program audio guide | 1 | 5 |
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Table of contents | 1 |
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Why protect against the sun? | 1 | Sunburn (2), dark spots (2) |
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What is skin cancer? | 3 | Basal cell carcinomas (2), squamous cell carcinomas (2), melanoma (2) |
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What is the chance of a kidney transplant recipient getting skin cancer? | 6 | Kidney transplant recipient’s risk (1), public’s risk (1), select skin tone (1), ease of sunburn (2), time from transplant to get skin cancer (1) | Testimonial: Surprised by sunburn (10) |
How do people get sun exposure? | 3 | Outdoor activities (2): Select outdoor activities you do |
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ABC rule for sun protection | 3 |
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Testimonials (3), skin irritation from sun (7), using sunblock (9), wearing a hat (8) |
Frequently asked questions about sunscreen | 9 | Broad-spectrum sun blockage (3), amount to use (1), two coats of sunscreen (1) | Lotion, gel, cream, and stick sunscreen consistency (77); application of sunscreen stick (32); sunscreen spray to arm (20); sunscreen lotion (31); difficulty of spraying sunscreen on your own back (14); incorrect sunscreen spraying (10); application of sunscreen lotion to face: correct (35 seconds)/incorrect (21 seconds) |
What types of protective clothing are good to wear? | 2 | Protective clothing (1), correct hat (2) |
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Your personal sun-protection recommendation: |
6 | Doctor gives personal recommendation for sun protection (1), tips to remember sun-protection gear (1) |
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The tablet screen was divided into 3 parts with the primary content on the left half of the screen. Supplementary content, which was available on the right side of the screen, was accessed by touching the icon (
Upon touching the headphone icon, audio narration presenting the same content as the written text was available for all program screens. Users could elect not to listen to the audio narration, skip pages and chapters, or repeat them.
Users toggled between the 2 pie graphs presenting the risk of developing skin cancer in kidney transplant recipients and in the general population.
The educational tablet program included interactive components in which the participants selected (1) the color bar that most closely matched the color of their skin in the sun-protected location of the upper inner arm, (2) the daily outdoor activities they usually performed, and (3) their commonly used sun-protective behaviors, if any (
Users selected daily activities with commonly unrecognized sun exposure.
Personalized sun-protection recommendation from the doctor.
At the beginning of the program, participants selected the preferred language, English or Spanish, and their choice of narrators. Two Hispanic Latino bicultural, bilingual research coordinators translated the text and audio narration of the program from English to Spanish. Several bilingual physicians and health professionals then validated the translation of the text and audio narration from Spanish to English.
Culturally appropriate language (eg, the term “skin irritation” from the sun) was used in place of “sunburn” to describe the response of people with skin of color to sun exposure. Sunburn and skin irritation from sun exposure were depicted as occurring in people with skin of color as well as in the skin of non-Hispanic white people after “getting some sun.” Language such as “tan” as a response to sun exposure was explicitly avoided because in our previous research, non-Hispanic blacks and Hispanic Latinos reported that they “got dark” rather than “tan” [
Because many non-Hispanic black kidney transplant recipients did not know how to swim, examples of outdoor activities commonly enjoyed by non-Hispanic white, such as swimming, were not used in the workbook. Family outdoor activities were emphasized because Hispanic Latino kidney transplant recipients noted the importance of time spent with the extended family (eg, a picnic in the park).
Lastly, photographs of skin cancers and skin changes from sun exposure occurring in people with all skin tones were presented (
Explanation of squamous cell carcinoma with examples in kidney transplant recipients with skin of color.
Testimonial from a non-Hispanic black kidney transplant recipient relating skin irritation from the sun on his bald scalp because he forgot his hat.
Health literacy was ascertained by a written self-administered survey in Spanish or English of the Short Test of Functional Health Literacy in Adults (S-TOFHLA) administered as a timed 7-minute 36-item survey [
A brief self-report survey of demographic information was administered on the tablet. Participants could select the English or Spanish versions to read and could elect to hear the audio narration. People with inadequate health literacy as determined by the score received on the S-TOFHLA were invited to have the survey administered by the research coordinator. Demographic information consisting of sex, age, marital status, race/ethnicity, education, annual household income, and months since receiving the transplant was only assessed in the first survey.
Knowledge of skin cancer and sun protection was assessed with the following 9 statements with “agree” or “disagree” responses: (1) people with a kidney transplant take medicine that may make their skin sensitive to the sun; (2) only people with a kidney transplant who have sun-sensitive skin, who freckle and sunburn easily, have to worry about getting a skin cancer; (3) applying sunscreen after being out in the sun is enough protection; (4) when the sun is high in the sky, seek shade to avoid the strong rays of the sun; (5) clothing does not protect the skin from the sun; (6) sunglasses protect the delicate skin around the eyes; (7) it takes about a teaspoon of sunscreen to cover the skin of the whole body; (8) a baseball cap is a good hat for sun protection; (9) walking outside at noon for an hour is not enough time outside to need sun-protective gear. Recognition of their personal risk of developing skin cancer was an item with a 5-point Likert scale. Hours of outdoor sun exposure were assessed by their weekday and weekend duration of outdoor activities between 10 am and 4 pm. Willingness to change sun-protection behavior (20 items with a 5-point Likert scale) and current sun-protection behavior(s) focused on the use of sun protection by wearing sunscreen, wearing protective clothing, wearing sunglasses, and seeking shade (20 items with a 5-point Likert scale). The same items were assessed with all participants by a self-report survey at 2 study time points (before and 2 weeks after the baseline visit). The psychometrically validated measures among kidney transplant recipients were previously reported [
To test the “usability” of SunProtect, research coordinators performed 1-2-hour cognitive interviews with 4 non-Hispanic white and 4 non-Hispanic black kidney transplant recipients in English, and 5 Hispanic Latino kidney transplant recipients in Spanish, which were audio and video recorded. Each interview was transcribed and translated into English to (1) evaluate and provide feedback on the overall look of the screen, the font size, color scheme, and navigation buttons; (2) solicit suggestions for improving behavioral alternatives; and (3) evaluate the cultural sensitivity of the tablet program. Three reviewers independently reviewed the audiotapes, field notes, and coded the data. The team met to discuss the interpretations, come to consensus, and identify data-driven approaches to revise the content. Revisions to content presented on the screens of the tablet were made in an iterative process after conducting 3 interviews with at least one individual from each racial/ethnic group.
Measures of the “use” of SunProtect were the duration of program use, the time spent on an individual page/screen, repetition of any portion of a chapter, selection of audio narration, and viewing of supplementary figures, videos, and/or testimonials.
Participants rated their “satisfaction” with the program’s ease of use, usefulness of content, and visual appeal of the presentation on a 5-point scale, with 5 being the greatest ease of use, content usefulness, and appeal of presentation.
At the end of the program, participants had the option to request that their personal sun-protection recommendations and/or the tip sheet for early detection of SCC with color illustrations be sent by email [
Research coordinators observed and kept a log of the time kidney transplant recipients spent in the waiting room until they were seen by the transplant nephrologists.
The sample size required to sensitively detect a 30% difference in using sun protection between the 3 ethnic/racial groups was 180 (60 in each group completing the study), assuming an alpha less than .05 and power of 0.8 or more in a two-tailed test. Attrition was estimated at 20%, with N=60 in each group. The effect size in each group was 20 with 95% confidence interval (±1-39).
Program use and evaluation, change in knowledge, and requests for written materials were compared between groups using Chi-square tests of association and Wilcoxon rank sum tests. Summary statistics are presented as counts and percentages, or mean (standard deviation) as appropriate. All analyses were run at a nominal type I error rate of 5%, and performed in SAS version 9.2 (Cary, NC, USA).
Of the 522 eligible kidney transplant recipients approached, 170 were accrued to the study (170/522, 32.6% participation rate). Eight eligible recipients at the University of Illinois at Chicago could not enter the study due to failure of the Wi-Fi service. All participants in the baseline assessments completed the 2-week follow-up, including 60 non-Hispanic black, 62 non-Hispanic white, and 48 Hispanic Latino, who were mostly men (101/170, 59.4%) with a mean age of 51 (
Demographics of population (N=170).
Characteristics |
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Interventiona,b | Standard of carea,c |
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.183 | |
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Non-Hispanic white | 32 (38.1) | 30 (34.9) | |
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Hispanic/Latino | 23 (27.4) | 25 (29.1) | |
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Non-Hispanic black | 29 (34.5) | 31(36.0) | |
Male |
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45 (53.6) | 56 (65.1) | .376 |
Married |
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49 (58.3) | 41 (47.7) | .060 |
College education or higher |
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37 (44.0) | 30 (34.9) | .099 |
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.648 | |
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<10,000 | 16 (19.0) | 14 (16.3) |
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10,000-19,999 | 12 (14.3) | 13 (15.1) |
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20,000-34,999 | 14 (16.7) | 13 (15.1) |
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35,000-50,999 | 18 (21.4) | 14 (16.3) |
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51,000-100,000 | 13 (15.5) | 22 (25.6) |
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>100,000 | 11 (13.1) | 10 (11.6) |
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Age in years, mean (SD) |
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51.0 (12.5) | 49.0 (14.2) | .334 |
Months since transplant, mean (SD) |
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17.3 (15.1) | 18.0 (15.3) | .733 |
Work-related sun exposure |
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35 (41.7) | 38 (44.2) | .896 |
aValues in the “Intervention” and “Standard of care” columns are provided as n (%), unless indicated otherwise.
bN=84
cN=86
d
Overall, there were significant gains in knowledge, perception of being at risk to develop skin cancer, and willingness to change sun protection for all kidney transplant recipients using the intervention in comparison with controls (
Change in knowledge, intentions to use sun protection, and sun-protection use by kidney transplant recipients.
Participant self-reported variablea |
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Non-Hispanic white |
Hispanic/Latino |
Non-Hispanic black |
Wilcoxon rank sum |
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Intervention |
Control |
Intervention |
Control |
Intervention |
Control |
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Pretest | 3 (2.5) | 3 (2.1) | 2 (0.2) | 2 (0.7) | 2 (1.8) | 2 (1.1) | .04b | ||||
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Post-test | 5 (3.4) | 3 (2.5) | 8 (1.1) | 4 (1.3) | 4 (2.6) | 5 (2.3) | |||||
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Pretest | 2 (1.3) | 2 (0.7) | 1 (0.5) | 1 (0.7) | 1 (0.6) | 1 (0.8) | .02b | ||||
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Post-test | 3 (1.6) | 2 (1.1) | 4 (0.7) | 2 (1.1) | 2 (1.7) | 1 (0.4) | |||||
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Pretest | 22 (0.7) | 20 (1.0) | 22 (1.0) | 21 (1.3) | 21 (1.0) | 22 (1.5) | .01b | ||||
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Post-test(immediate) | 66 (24.3) | 21 (0.6) | 85 (10.2) | 22 (09) | 43 (20.2) | 23 (2.4) | |||||
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Pretest | 47 (10.1) | 48 (9.7) | 28 (4.7) | 29 (5.4) | 31 (6.9) | 30 (4.7) | .01b | ||||
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Post-test (2 weeks) | 60 (11.6) | 50 (10.1) | 55 (3.9) | 30 (1.4) | 46 (10.3) | 31 (6.3) | |||||
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Pretest | 2.4 (0.7) | 2.1 (1.4) | 3.7 (1.2) | 4.0 (2.1) | 1.1 (0.5) | 1.0 (0.9) | .01b | ||||
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Post-test (2 weeks) | 1.6 (0.9) | 2.5 (0.7) | 2.4 (1.8) | 4.3 (1.9) | 1.0 (0.5) | 1.0 (0.8) |
aAll values are reported as mean (SD)
bStatistically significant Wilcoxon rank sum test
Participant Concern
Two kidney transplant recipients became concerned about lesions and asked to have them checked by one of the authors (JKR). However, both were benign.
The patient waited in the waiting room for about 30 minutes (SD 12 minutes).
The mean duration of “use” was 27 minutes (range 23-42 minutes) with Hispanic Latino kidney transplant recipients using the program the longest (
Use and evaluation of SunProtect by kidney transplant recipients.
Variable | Non-Hispanic whitea | Hispanic/Latinob | Non-Hispanic blackc | Wilcoxon rank sum |
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Mean duration (minutes) | 23 | 42 | 32 | .046d |
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Why protect against the sun | 1 (0.2) | 1 (3.4) | 1 (2.7) | .02d |
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What is skin cancer | 3 (4.1) | 7 (5.6) | 5 (4.9) | .03d |
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Chance of getting skin cancer | 2 (4.1) | 2 (4.6) | 2 (4.3) | .45 |
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Sunscreen application | 1 (5.0) | 4 (9.1) | 3 (8.2) | .03d |
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Ease of use | 4 (0.5) | 4 (0.5) | 4 (0.2) | .85 |
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Usefulness of content | 5 (0.0) | 5 (0.0) | 4 (0.6) | .70 |
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Appealing presentation | 4 (1.0) | 4 (0.7) | 4 (1.0) | .73 |
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Sun-protection recommendations | 12/32 (37.5) | 10/23 (43.5) | 9/29 (31.0) | .64 |
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Tips to detect skin cancer | 27/32 (84.4) | 19/23 (82.6) | 24/29 (82.8) | .85 |
aN=32
bN=23
cN=29
dStatistically significant Wilcoxon rank sum test
eValues presented as number of times repeated (SD)
fValues presented as mean (SD), on a scale of 1-5
gValues presented as n/N (%)
There was no significant difference among the 3 racial/ethnic groups in the duration of viewing the section on risk of developing skin cancer (4.1 minutes by non-Hispanic white, 4.6 by Hispanic Latino, and 4.3 by non-Hispanic black) or the number of repetitions of screens. On average, users “toggled” between the pie charts depicting relative risk rates for developing skin cancer for kidney transplant recipients and the general population 4 times (
Patients without prior experience using a tablet were not able to implement the navigation directions presented on the tablet (45 Hispanic Latinos, 16 non-Hispanic blacks, 5 non-Hispanic whites, 66/170, 39%). For users without prior experience using a tablet, the research assistant demonstrated screen navigation for 39% of users and stayed in an adjacent room to be available to assist the participant with concerns. Seven participants required further assistance in accessing the videos.
Spanish “audio narration” was chosen by Hispanic Latino kidney transplant recipients with inadequate health literacy (45/48). Most non-Hispanic white kidney transplant recipients, who had adequate health literacy, did not choose the audio narration (48/60). Inadequate and marginally functional health literate kidney transplant recipients chose the audio narration in either Spanish or English with statistically significantly greater frequency than kidney transplant recipients with adequate functional health literacy (
Participants from all racial/ethnic groups were “satisfied” with the ease of use of the program (4/5), and with the visual appeal of the presentation of content (4/5). The content was deemed useful (5/5) by non-Hispanic white and Hispanic Latino kidney transplant recipients; however, non-Hispanic black kidney transplant recipients felt the content was less useful (4/5).
While the requests for personal sun-protection recommendations were limited to 20% or less of the participants, more than 80% of participants requested the tip sheet for early detection of SCC with color illustrations.
The results of this pilot study found that SunProtect, as delivered by tablet, was effective in increasing knowledge, perception of being at risk of developing develop skin cancer, willingness to change sun protection, and change in sun protection 2 weeks after education among kidney transplant recipients with a range of health literacy. Hispanic/Latino kidney transplant recipients had the least health literacy and gained the greatest increase in knowledge and willingness to change. Participants appeared to have benefited from the ability to listen to the audio presentation in the language of their choice, to move at their own pace, and to repeat screens and chapters to inform their sun-protection decisions. In this research, the 3 most commonly repeated content areas were kidney transplant recipients with skin of color getting sunburn or skin irritation from the sun, how to use sunscreen, and explanations of skin cancer. The chapter about skin cancers had the longest duration of use and the most repetition of content. Knowledge gained by the kidney transplant recipients with inadequate literacy, who elected to listen to the audio descriptions of skin cancer photographs, was greater than by the kidney transplant recipients with adequate literacy, who chose to read the narrative descriptions and did not listen to the audio description. The most frequently requested written material was the tips for early detection of skin cancer. While lack of prior experience using a tablet may have contributed to longer duration of use by some participants, the interest in learning about skin cancer as demonstrated by length of viewing and number of repetitions was common to all participants.
SunProtect provided health information in a manner that was well suited and liked by patients with limited health literacy. Patients with limited health literacy may be less likely to ask questions than others [
Health care providers have limited amounts of time to spend with each patient. The material presented by the tablet supplements customary education provided by health care providers. Furthermore, the usual waiting time for kidney transplant recipients was approximately 30 minutes, which will allow the tablet to be used in the waiting room before the meeting their health care providers. Lastly, when provider and patient do not share a common language, attempts to bridge the language barrier may be difficult; thus, the Spanish language provided by the tablet in text on the screen with audio narration and in the videos may help communicate the sun-protection options.
A limitation of this study is the 2-week period of follow-up. A longer follow-up would be needed to determine whether there was decay in sun-protection behavior. The research was performed in a city with temperate weather, and thus, it may not be possible to generalize the findings to locations with longer periods of sunny weather. In the interest of decreasing participants’ fatigue, confidence in their ability to perform sun protection was not determined. An additional limitation was obtaining the self-reported outcome measures in 2 different ways. The pretest survey was completed on the tablet by the participant. Two weeks after the education, the survey responses were obtained by telephone interview, which may have introduced observer effect. Furthermore, enrollment of Hispanic Latino kidney transplant recipients did not achieve the sample size of 60 completing the study that was needed for analysis of ethnic/racial differences in adoption of sun-protection behavior(s).
Kidney transplant recipients from diverse racial/ethnic groups and health literacy levels who used SunProtect became aware of their risk of developing skin cancer, increased their knowledge of skin cancer and sun protection, showed willingness to change their sun protection, and changed their sun-protection behavior. Because presurvey and postsurvey items would not be used in routine practice, reinforcement of the need for and relevance of sun protection by the survey will not be done. Regular life-long sun protection can decrease kidney transplant recipients’ chance of developing skin cancer. Future research is needed to examine kidney transplant recipient’s long-term adherence to sun protection and feasibility of delivery in a variety of practices.
Delivery of education with a tablet equipped with headphones may be done in the waiting room before a regularly scheduled 6- or 12-month follow-up visits to the transplant nephrologist. Technology may be used to provide patient education and reduce the physician’s burden of educating and training patients.
squamous cell carcinoma
Short Test of Functional Health Literacy in Adults
This study was supported by a grant to JKR from the National Cancer Institute (Grant No R21 CA173196). Statistical analyses were performed by Mary J Kwasny, ScD.
Dr Robinson owns the trademark on the software.