Table 2.
Selected lifestyle characteristics of two sub-study subjects
| Exposure variables | LBW group (n = 315) | Macrosomia group (n = 381) | ||||
|---|---|---|---|---|---|---|
| LBW (%) | NBW (%) | P a | Macrosomia (%) | NBW (%) | P a | |
| N | 105 | 210 | 127 | 254 | ||
| Nearby chemical factory | 0.303 | 0.934 | ||||
| Yes | 4 (3.8) | 14 (6.7) | 4 (3.2) | 10 (3.9) | ||
| Recent interior decoration | 0.279 | 0.374 | ||||
| Yes | 13 (12.5) | 36 (17.2) | 18 (14.2) | 28 (11.0) | ||
| Regularly cooking | 0.806 | 0.094 | ||||
| Yes | 76 (72.4) | 154 (73.3) | 97 (76.4) | 173 (68.1) | ||
| Chief fuel used for cooking | 0.989 | 0.920 | ||||
| Pollution-type | 11 (10.6) | 22 (10.5) | 15 (11.8) | 29 (11.5) | ||
| Ecological and clean-type | 93 (89.4) | 187 (89.5) | 112 (88.2) | 224 (88.5) | ||
| Use of range hood | 0.285 | 0.876 | ||||
| Yes | 72 (68.6) | 156 (74.3) | 88 (69.3) | 174 (68.5) | ||
| Pets | 0.584 | 0.731 | ||||
| Yes | 29 (27.6) | 52 (24.8) | 28 (22.0) | 60 (23.6) | ||
| Radiation-proof clothes use during pregnancy | 0.978 | 1.000 | ||||
| Yes | 11 (10.6) | 22 (10.5) | 15(11.8) | 30 (11.8) | ||
| Lipstick use during pregnancy | 0.717 | 0.054 | ||||
| Yes | 6 (5.7) | 10 (4.8) | 2 (1.6) | 15 (5.9) | ||
| Hair dye use pre-pregnancy | 0.047 | 0.175 | ||||
| Yes | 75 (71.4) | 126 (60.0) | 75 (59.1) | 168 (66.1) | ||
Abbreviations: LBW low birth weight, NBW new birth weight
aT-tests and Chi-square tests were used to test differences in two sub-study subjects