TABLE 1.
Clinical skin parameters of cheeks from different age groups.
| Group | Children Median (25th, 75th) | Youth Median (25th, 75th) | Middle age Median (25th, 75th) | Elderly Median (25th, 75th) | P-value |
| Spots | 17.87 (13.78, 21.47) | 25.12 (21.07, 27.38) | 32.80 (29.81, 35.22) | 38.08 (34.97, 44.38) | <0.001 |
| UV spots | 5.30 (2.75, 7.94) | 11.16 (5.79, 15.23) | 11.37 (8.82, 16.57) | 14.19 (9.89, 20.01) | <0.001 |
| Brown spots | 21.49 (19.43, 25.23) | 3016 (25.27, 33.62) | 43.53 (37.09, 46.01) | 54.49 (51.98, 62.08) | <0.001 |
| Red areas | 25.68 (19.91, 29.60) | 27.36 (25.35, 33.77) | 33.28 (28.72, 34.81) | 39.25 (36.84, 42.97) | <0.001 |
| Wrinkles | 4.34 (2.80, 7.88) | 7.59 (3.73, 16.21) | 17.61 (11.65, 22.40) | 18.22 (16.60, 23.67) | <0.001 |
| Texture | 0.78 (0.40, 1.81) | 4.46 (1.50, 5.30) | 10.45 (5.51, 14.12) | 18.43 (14.76, 24.08) | <0.001 |
| Pores | 0.61 (0.51, 0.73) | 8.51 (5.97, 13.56) | 18.28 (13.85, 21.71) | 15.58 (12.40, 16.49) | <0.001 |
| Porphyrins | 1.12 (0.65, 1.48) | 9.91 (5.12, 15.83) | 7.62 (5.62, 10.71) | 4.53 (2.04, 6.76) | <0.001 |
Median score and quartile (25th percentile, 75th percentile) were used to describe the absolute scores of different indices. P-values were calculated by the Kruskal–Wallis test. Significance level was 0.05.