TABLE 2.
Comparison of characteristics between patients who use and do not use OTC whitening
| CHARACTERISTICS | OTC YES n=207 (51%) | OTC NO n=199 (49%) | P-VALUE |
|---|---|---|---|
| Age (mean±standard deviation) | 40.8±12.3 | 41.5±12.8 | 0.563 |
| Female | 189 (91.3) | 172 (86.4) | 0.117 |
| Skin Type | 0.173 | ||
| I/II/III | 67 (33.2) | 77 (38.6) | |
| IV/V/VI | 135 (66.8) | 122 (61.4) | |
| Born in USA | 64 (30.9) | 57 (28.6) | 0.616 |
| Primary language (N=399*) | 0.653 | ||
| English | 84 (41.2) | 86 (44.1) | |
| Spanish | 80 (39.2) | 78 (40.0) | |
| Other | 40 (19.6) | 31 (15.8) | |
| Employed (N=386*) | 54 (27.3) | 53 (28.2) | 0.840 |
| Marital status (N=397*) | 0.870 | ||
| Single | 101 (50.2) | 95 (48.5) | |
| Married | 69 (34.3) | 78 (39.8) | |
| Others | 31 (15.5) | 23 (11.8) | |
| College education or greater (N= 396*) | 89 (44.3) | 89 (45.6) | 0.988 |
| Hyperpigmentation diagnosis (N=438*) | <0.001 | ||
| Melasma | 112 (54.1) | 60 (30.2) | |
| Post-inflammatory hyperpigmentation | 73 (35.5) | 73 (36.7) | |
| Others | 39 (18.9) | 81 (40.6) | |
OTC: Over-the-counter