From: A case-control study of GST polymorphisms and arsenic related skin lesions
 |  | Controls | Cases | |||
---|---|---|---|---|---|---|
Diffuse Melanosis | Â | Â | n = 377 | |||
Leukomelanosis | Â | Â | n = 342 | |||
Spotted Melanosis | Â | Â | n = 145 | |||
Diffuse Keratosis | Â | Â | n = 117 | |||
Spotted Keratosis | Â | Â | n = 73 | |||
Hyperkeratosis | Â | Â | n = 40 | |||
Mean Age in yrs (SD) | 33.7 (12.6) | n = 597 | 33.9 (12.7) | n = 592 | P = 0.58 | |
Mean Body Mass Index (kg/m2) (SD) | 20.4 (3.1) | n = 597 | 20.1 (3.1) | n- = 592 | P = 0.70 | |
% Male | 60.3% | n = 360 | 60.3% | n = 357 | P = 0.91 | |
Mean Duration of Present well use(yrs) (SD) | 10.1 (9.0) | n = 592 | 8.0 (7.2) | n = 592 | P = 0.02 | |
% Reported a Previous Well | 2.84% | n = 17 | 7.77% | n = 45 | P < 0.0001 | |
Mean As concentration of current well (μg/l) (SD) | 66.2 (149.6) | n = 595 | 232.8 (315.7) | n = 592 | P < 0.0001 | |
Mean Daily Total Water/Liquid consumption (L) (SD) | 3.8 (1.2) | n = 595 | 3.7 (1.1) | n = 592 | P = 0.84 | |
% Ever used Betel nuts | 24.3% | n = 145 | 27.7% | n = 164 | P = 0.007 | |
Mean Years of Betel nut Use (SD) | 10.8 (8.9) | n = 143 | 11.0 (9.5) | n = 160 | P = 0.78 | |
Mean Number of Betel nuts chewed per day (SD) | 5.6 (3.6) | n = 158 | 5.7 (3.8) | n = 149 | P = 0.53 | |
% Chew tobacco leaves | 16.4% | n = 587 | 17.1% | n = 590 | P < 0.0001 | |
Mean Years of Tobacco leaves chewed (SD) | 9.9 (9.1) | n = 95 | 10.9 (9.4) | n = 95 | P = 1.0 | |
% Smokes Cigarettes Currently | 30.5% | n = 597 | 26.7% | n = 592 | P = 0.03 | |
% Ever Smoked | 31.0% | n = 597 | 28.7% | n = 592 | P = 0.0007 | |
Education Level | n = 597 | N = 592 | P = 0.80 | |||
% Illiterate | 17.4% | n = 104 | 22.9% | n = 136 | Â | |
% Literate (incomplete Primary Education) | 23.8% | n = 142 | 29.4% | n = 174 | Â | |
%Completed Primary Education | 11.7% | n = 79 | 11.8% | n = 70 | Â | |
% Completed Middle School Education | 31.9% | n = 191 | 23.5% | n = 139 | Â | |
%Completed Secondary Education or More | 13.6% | n = 81 | 26.0% | n = 154 | Â | |
Polymorphims: | Â | Â | Â | Â | Â | |
GSTT1 | Â | Â | Â | Â | P = 0.07 | |
Null | 17.9% | 18.9% | n = 112 | 16.9% | n = 100 | Â |
Wildtpe | 82.1% | 81.1% | n = 482 | 83.1% | n = 492 | Â |
GSTM1 | Â | Â | Â | Â | P = 0.72 | |
Null | 41.1% | 41.1% | n = 244 | 41.0% | n = 243 | Â |
Wildtype | 58.9% | 58.9% | n = 350 | 59.0% | n = 349 | Â |
GSTP1 | Â | Â | Â | Â | P = 0.07 | |
AA | 53.8% | 53.5% | n = 313 | 54.1% | n = 318 | Â |
AG | 38.7% | 40.3% | n = 236 | 37.1% | n = 218 | Â |
GG | 7.5% | 6.2% | N = 36 | 8.8% | n = 52 | Â |