Table 2 Personal and environmental characteristics of children by household biomass fuel status
|  | Overall (n = 1690) | Biomass fuel households (n = 865) | No biomass fuel households (n = 825) | P value |
|---|---|---|---|---|
Demographics | ||||
 Mean age, years (±SD) | 13.6 (2.7) | 13.3 (2.7) | 13.9 (2.6) | <0.001 |
Sex, n (%) | ||||
 Male | 873 (51.7) | 433 (50.1) | 440 (53.3) | 0.178 |
Mother’s level of education, n (%) | ||||
  ≥ High school | 200 (14.6) | 77 (11.0) | 123 (18.4) | <0.001 |
Body mass index (BMI), n (%) | ||||
 Overweight | 26 (1.5) | 6 (0.7) | 20 (2.4) | 0.004 |
Environmental exposure, n (%) | ||||
 Parental smoke | 13 (0.8) | 8 (0.9) | 5 (0.6) | 0.453 |
 Environmental tobacco smoke | 11.2 | 12.6 | 9.7 | 0.058 |
 Pet ownership, cat | 232 (13.7) | 128 (14.8) | 104 (12.6) | 0.191 |
 Pet ownership, dog | 393 (23.3) | 218 (25.2) | 175 (21.2) | 0.052 |
 Pet ownership, cat and dog | 517 (30.6) | 285 (32.9) | 232 (28.1) | 0.031 |