Table 1 Demographic data of cases and controls
Characteristic | Functional Constipation n (%) | Controls n (%) | p-value |
|---|---|---|---|
Sex | 0.477a | ||
 Girls | 48 (8.6) | 512 (91.4) |  |
 Boys | 41 (7.4) | 512 (92.6) |  |
Age (months, mean (SD)) | 22.01 (12.6) | 20.6 (11.1) | 0.254 b |
 Boys | 24.5 (13.6) | 20.6 (11.2) |  |
 Girls | 19.8 (11.4) | 20.5 (10.9) |  |
Birth order | 0.036a* | ||
 1st | 50 (9.6) | 470 (90.4) |  |
 2nd | 33 (7.8) | 389 (92,2) |  |
 3rd | 4 (2.9) | 135 (97.1) |  |
 4th | 1 (3.4) | 28 (96.6) |  |
 5th, 6th, 7th | 1 (33.3) | 2 (66.7) |  |
Siblings? | 0.547a | ||
 Yes | 48 (7.6) | 586 (92.4) |  |
 No | 41 (8.6) | 438 (91.4) |  |
Place of residence | 0.013a* | ||
 Rural | 31 (5.6) | 521 (94.4) |  |
 Urban | 50 (9.6) | 469 (90.4) |  |
Mothers’ age (years, SD) | 30.7 (5.3) | 30.6 (4.9) | 0.901b |
Mothers’ education (years, SD) | 12.4 (2.7) | 12.3 (2.8) | 0.773b |
Fathers’ age (years, SD) | 34.0 (6.0) | 33.8 (5.2) | 0.694b |
Fathers’ education (years, SD) | 12.3 (2.7) | 12.2 (2.8) | 0.782b |
Household income (rupee/month) | 0.542a | ||
 < 10.000 | 8 (11.6) | 61 (88.4) |  |
 10.000–19.999 | 28 (10.2) | 246 (89.8) |  |
 20.000–34.999 | 27 (6.7) | 376 (93.3) |  |
 35.000–49.999 | 17 (7.6) | 207 (92.4) |  |
 50.000–99.999 | 8 (7.3) | 101 (92.7) |  |
 > 100.000 | 3 (7.1) | 39 (92.9) |  |