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Table 7 Change in outcome measures between baseline and follow-up

From: Promoting sunscreen use and skin self-examination to improve early detection and prevent skin cancer: quasi-experimental trial of an adolescent psycho-educational intervention

  Control Intervention
  Baseline Follow-up Unadjusted Adjusted Baseline Follow-up Unadjusted Adjusted
Outcome Measures Mean (SD) Mean (SD) n Sig Sig Mean (SD) Mean (SD) n Sig Sig
Sunscreen Use Intention and Planning Behaviour
 Intention to use sunscreen 3.61 (1.203) 3.37 (1.341) 79 0.015* 0.388 3.67 (1.177) 3.88 (1.099) 360 < 0.001*** 0.186
 Plan WHAT sunscreen intend to use 2.47 (1.440) 2.44 (1.366) 79 0.443 0.773 2.64 (1.353) 3.33 (1.268) 369 < 0.001*** 0.261
 Plan WHEN to use sunscreen 2.52 (1.376) 2.44 (1.366) 79 0.533 0.803 3.01 (1.378) 3.33 (1.268) 369 < 0.001*** 0.817
 Plan WHERE to get it 2.43 (1.420) 2.29 (1.360) 79 0.237 0.965 2.81 (1.479) 3.17 (1.358) 369 < 0.001*** 0.779
 Plan HOW to get it 2.27 (1.288) 2.10 (1.257) 79 0.198 0.952 2.52 (1.365) 2.93 (1.259) 368 < 0.001*** 0.196
 COPING Plan 2.11 (1.368) 2.04 (1.203) 79 0.513 0.479 2.32 (1.309) 2.91 (1.337) 366 < 0.001*** 0.915
Skin Self Examination Intention and Planning Behaviour
 Intention to examine skin for possible signs of skin cancer on a regular basis 2.71 (0.865) 2.49 (0.932) 79 0.035* 0.456 2.62 (0.976) 3.04 0.978 375 < 0.001*** 0.051
 I have made a detailed plan regarding WHEN 1.47 (0.875) 1.49 (0.799) 79 0.300 0.125 1.48 (0.842) 2.21 (1.103) 376 < 0.001*** 0.718
 I have made a detailed plan regarding WHERE 1.56 (0.920) 1.56 (0.877) 78 0.991 0.569 1.61 (0.945) 2.62 (1.221) 374 < 0.001*** 0.192
 I have made a detailed plan regarding HOW 1.55 (0.935) 1.62 (0.901) 78 0.744 0.996 1.55 (0.858) 2.72 (1.213) 374 < 0.001*** 0.022*
 I have made a detailed plan for COPING 1.48 (0.830) 1.76 (0.950) 79 0.017* 0.672 1.65 (0.915) 2.37 (1.166) 372 < 0.001*** 0.426
Skin cancer risk representations
Identity: How much skin cancer would affect your life 7.70 (2.084) 7.71 (2.316) 77 0.729 0.888 8.22 (1.806) 8.26 (1.943) 375 0.215 0.474
Control: How much control you feel you have to prevent skin cancer 5.29 (2.251) 5.05 (2.197) 78 0.834 0.990 5.90 (2.254) 6.62 (1.893) 376 < 0.001*** 0.029*
Timeline: Given you age, how relevant to conduct SSE 4.81 (2.391) 4.59 (2.265) 78 0.767 0.104 5.23 (2.308) 7.14 (2.068) 372 < 0.001*** 0.873
Consequences: How painful the effects of skin cancer would be 6.74 (2.002) 6.21 (2.223) 76 0.053 0.869 7.05 (2.036) 6.96 (2.200) 369 0.524 < 0.001***
  % (n) % (n)     % (n) % (n)    
Skin Self Examination in past month
 (% Yes) 8.7 (8) 12.5 (13)   0.337(+) 0.599(+) 5.6 (30) 32.6 (143)   < 0.001*** (+) < 0.001*** (+)
 (% No) 85.9 (79) 82.7 (86)     90.8 (486) 65.1 (286)    
 (% Don’t know) 5.4 (5) 4.8 (5)     3.6 (19) 2.3 (10)    
Talk about skin cancer in the past month
 (% Yes) 8.7 (8) 14.6 (15)   0.866(+) 0.888(+) 9.2 (49) 53.5 (234)   < 0.001***(+) < 0.001***(+)
 (% No) 91.3 (84) 85.4 (88)     90.8 (481) 46.5 (203)    
  1. Note:*p < 0.05, ***p < 0.001
  2. (+) p-values refer to the comparison between control and intervention for baseline and follow-up separately. Logistic regression model was applied to take into account confounder ‘Age’