Table 2.
Melasma Prevalence | Poultry Worker Study (N=25) | Cross-sectional Farmworker Study (N= 54) | Longitudinal Farmworker Study (N=300) | |||
---|---|---|---|---|---|---|
n | % | n | % | n | % | |
Total | 9 | 36.0 | 4 | 7.4 | 42 | 14.0 |
Age group | ||||||
18–24 | 0 | 0.0 | 1 | 4.3 | 8 | 10.4 |
25–30 | 2 | 22.0 | 1 | 7.1 | 9 | 13.0 |
31 and older* | 7 | 70.0 | 2 | 11.8 | 25 | 16.2 |
Nationality | ||||||
Mexican | 0 | 0.0 | 4 | 7.4 | 40 | 13.5 |
Guatemalan | 9 | 39.1 | 0 | 0 | 2 | 50.0 |
Other | 0 | 0 | 0 | 0 | 0 | 0 |
Language spoken | ||||||
Spanish | 0 | 0.0 | - | - | 34 | 13.0 |
Indigenous language | 9 | 39.1 | - | - | 8 | 21.1 |
The oldest case is 51 for the poultry worker study, 35 for the cross-sectional study, and 51 years old for the longitudinal study.