Table 2. Association of asthma with socio-demographic characteristics.
| Characteristic | Cases (n=407) No. (%) | Controls (n=545) No. (%) | OR (95% CI) | p-value |
|---|---|---|---|---|
| Gender | ||||
| Male | 160 (39.3) | 283 (51.9) | 0.60 (0.46-0.78 | < 0.001 |
| Female | 247 (60.7) | 262 (48.1) | ||
| Maternal education (Years) | ||||
| < 12 | 275 (67.6) | 263 (48.3) | 263 (48.3) 282 (51.7) | < 0.001 |
| > 12 | 132 (32.4) | 282 (51.7) | ||
| Paternal education (Years) | ||||
| < 12 | 244 (60.0) | 265 (48.6) | 1.58 (1.22-2.10) | < 0.001 |
| > 12 | 163 (40.0) | 280 (51.4) | ||
| Monthly income (ID)* | ||||
| <500,000 | 140 (34.4) | 239 (43.9) | 1 | |
| 500,000–1,000,000 | 167 (41.0) | 180 (33.0) | 0.63 (0.58-0.71) | 0.009 |
| > 1,000,000 | 100 (24.6) | 126 (23.1) | 0.74 (0.67–0.82) | |
| Birth order | ||||
| First | 138 (33.9) | 185 (33.9) | 0.99 (0.76-1.30) | 0.990 |
| Second or after | 269 (66.1) | 360 (66.1) | ||
| Family size | ||||
| < 5 | 109 (26.8) | 407 (74.4) | 8.06 (6.02-10.80) | < 0.001 |
| > 5 | 298 (73.2) | 138 (25.3) | ||
*
ID= Iraqi Dinar, I US $= 1250 ID