Table 4 Population characteristics for the case-control study, using data from ENSANUT 2012
From: PM2.5 exposure as a risk factor for type 2 diabetes mellitus in the Mexico City metropolitan area
Cases | Controls | ||||
|---|---|---|---|---|---|
n = 121 | n = 480 | ||||
Mean | SD | Mean | SD | p value | |
Age | 51.7 | 13.4 | 51.3 | 13.0 | 0.79 |
Sex, men (n, %) | 49 | 40.5 | 196 | 40.8 | 0.95 |
Socioeconomic status (mean, SD) | 0.2 | 1.1 | −0.1 | 1.0 | 0.00 |
BMI (n, %) | |||||
Normal (< 24.9) | 11 | 12.4 | 72 | 20.4 | |
Overweight (25.0–29.9) | 33 | 37.0 | 154 | 43.6 | |
Obesity (> 30.0) | 45 | 50.6 | 127 | 36.0 | 0.04 |
Smoking status (n, %) | |||||
Never | 58 | 47.9 | 189 | 39.4 | |
Former | 28 | 23.2 | 86 | 17.9 | |
Current | 37 | 28.9 | 205 | 42.7 | 0.02 |
PM2.5 exposure two years before cases diagnosis (mean, SD) | |||||
Monitor | 24.4 | 4.0 | 24.4 | 4.3 | 0.89 |
AOD | 24.2 | 2.2 | 24.1 | 2.3 | 0.62 |