Table 3. Cosmetic habits according to country.
| Cosmetic habits | Chinese (Guangzhou, Nanjing, and Shijiazhuang; n=273) | Korean (Suwon; n=88) | p-value |
|---|---|---|---|
| Frequency of sunscreen usage | 0.001** | ||
| Never | 12 (4.4) | 1 (1.1) | |
| Sometimes | 160 (58.6) | 36 (40.9) | |
| Always | 101 (37.0) | 51 (58.0) | |
| SPF index of sunscreen of usage† | 0.000*** | ||
| ≤15 | 7 (2.6) | 1 (1.1) | |
| 16~30 | 110 (40.3) | 11 (12.5) | |
| 31~49 | 44 (16.1) | 23 (26.1) | |
| ≥50 | 41 (15.0) | 42 (47.7) | |
| PA index of sunscreen of usage‡ | 0.002** | ||
| 0 | 2 (0.7) | 0 (0) | |
| + | 23 (8.4) | 1 (1.1) | |
| ++ | 81 (29.7) | 28 (31.8) | |
| +++ | 66 (24.2) | 37 (42.0) | |
| Daily base makeup | 0.015* | ||
| No | 34 (12.5) | 3 (3.4) | |
| Yes | 239 (87.5) | 85 (96.6) | |
| Types of moisturizer of usage | 0.001** | ||
| No or toner only | 15 (5.5) | 1 (1.1) | |
| Light | 65 (23.8) | 9 (10.2) | |
| Heavy | 193 (70.7) | 78 (88.6) |
Values are presented as presented as number (%). SPF: sun protection factor, PA: protection grade of ultraviolet A. *p<0.05, **p<0.01, ***p<0.001. †Data available in 202 Chinese and 77 Korean patients. ‡Data available in 172 Chinese and 66 Korean patients.