Table 1.
Main demographic characteristics of the participants in the inclusion (T0) according to the randomized group.
| Variable | SC | SC+P | Total | p-value |
|---|---|---|---|---|
| Sex – n (%) | 0.519 | |||
| Male | 9 (45) | 7 (35) | 16 (40) | |
| Female | 11 (55) | 13 (65) | 24 (60) | |
| Phototype – n (%) | 0.08 | |||
| I | - (-) | 1 (5) | 1 (3) | |
| II | 9 (45) | 13 (65) | 22 (55) | |
| III | 11 (55) | 6 (30) | 17 (43) | |
| Age (years)a | 73 (7) | 73 (9) | 73 (8) | 0.938 |
| Schooling – n (%) | 0.742 | |||
| Illiterate | 2 (10) | 2 (10) | 4 (10) | |
| Elementary | 15 (75) | 16 (80) | 31 (78) | |
| High School | 3 (15) | 2 (10) | 5 (13) | |
| FPSb | 105 (93–114) | 110 (78–118) | 107 (91–116) | 0.391 |
| AK Count (T0)b | 7 (6–9) | 7 (6–8) | 7 (6–9) | 0.321 |
| AKSS (T0)b | 76 (46–100) | 70 (52–91) | 72 (51–95) | 0.459 |
SC, Regular sunscreen group; SC+P, Sunscreen group with photolyase; AK, actinic keratosis; FPS, forearms photoageing scale; AKSS, forearms AK severity score.
a
Mean (Standard Deviation).
b
Median (p25–p75).