Table 3.
Significant predictors of preterm birth
| Characteristics | Birth Status | Odds ratio | 95% CI | p value* | |
|---|---|---|---|---|---|
| Term n = 117 |
Preterm n = 15 |
||||
| Maternal age (years) | 117 | 15 | 1.03 | 0.91 - 1.16 | 0.601 |
| Occupation | 0.692 | ||||
| Housewife | 112 | 14 | 1.00 | ||
| Working | 5 | 1 | 1.60 | 0.17 - 14.70 | |
| Ethnicity | 0.805 | ||||
| Muhajir | 57 | 6 | 0.66 | 0.17 - 2.54 | |
| Memon | 25 | 4 | 1.00 | ||
| Others | 35 | 5 | 0.89 | 0.22 - 3.66 | |
| Education level | 0.396 | ||||
| No education or some Schooling |
34 | 6 | 1.00 | ||
| Intermediate and above | 83 | 9 | 0.61 | 0.20 - 1.86 | |
| Education level of husband | 0.023 | ||||
| No education or some schooling |
22 | 7 | 1.00 | ||
| Intermediate and above | 95 | 8 | 0.26 | 0.087- 0.01 | |
| Monthly Income (Rs.) | 0.438 | ||||
| < 10,000 | 25 | 5 | 1.00 | ||
| ≥ 10,000 | 80 | 10 | 0.62 | 0.20 - 2.00 | |
| Family system | 0.683 | ||||
| Joint family system | 84 | 10 | 1.00 | ||
| Nuclear family system | 33 | 5 | 1.27 | 0.40 - 4.00 | |
| Nature of work | 0.698 | ||||
| Sitting | 7 | 1 | 1.00 | ||
| Standing | 15 | 3 | 1.40 | 0.12 - 16.0 | |
| Walking | 30 | 3 | 0.70 | 0.06 - 7.78 | |
| All | 34 | 6 | 1.24 | 0.13 - 11.93 | |
| Standing/walking | 31 | 2 | 0.45 | 0.04 - 5.71 | |
| Hours of walking | |||||
| 0 to 2 hours per day | 35 | 4 | 1.00 | 0.649 | |
| 3 to 5 hours per day | 69 | 8 | 1.01 | 0.29 - 3.60 | |
| > 5 hours per day | 13 | 3 | 1.02 | 0.40 - 10.3 | |
| Hours of standing | |||||
| 0 to 2 hours per day | 21 | 3 | 1.00 | 0.539 | |
| 3 to 5 hours per day | 84 | 9 | 0.75 | 0.19 - 3.01 | |
| > 5 hours per day | 12 | 3 | 1.75 | 0.30 - 10.1 | |
| Parity | 0.035 | ||||
| Primiparous | 46 | 2 | 1.00 | ||
| Multiparous | 71 | 13 | 4.21 | 0.91 - 19.53 | |
| Number of children | 0.145 | ||||
| 0 | 53 | 3 | 1.00 | ||
| 1-2 | 51 | 10 | 3.46 | 0.90 - 13.31 | |
| > 2 | 13 | 2 | 2.72 | 0.41 - 17.98 | |
| Sex of children at home | |||||
| Female (no/yes) | 77/40 | 7/8 | 2.20 | 0.74 - 6.50 | 0.155 |
| Male (no/yes) | 73/44 | 4/11 | 4.56 | 1.37 - 15.21 | 0.008 |
| Nature of present pregnancy | |||||
| Planned (no/yes) | 33/84 | 6/9 | 1.70 | 0.56 - 5.15 | 0.358 |
| History of preterm birth (no/yes) |
110/7 | 13/2 | 0.41 | 0.08 - 2.20 | 0.334 |
| History of Abortion (no/yes) |
95/22 | 14/1 | 3.24 | 0.40 - 26.0 | 0.198 |
| Visit to Antenatal Clinic | 0.990 | ||||
| First trimester | 70 | 9 | 1.00 | ||
| Second/third trimester | 47 | 6 | 0.99 | 0.33 - 2.97 | |
| Hb Level | 0.180 | ||||
| low | 20 | 1 | 1.00 | ||
| normal | 76 | 13 | 3.42 | 0.42 - 27.73 | |
| Cortisol | 111 | 14 | 0.98 | 0.91 - 1.05 | 0.507 |
| Stress | 117 | 15 | 0.96 | 0.86 - 1.08 | 0.519 |
| Depression | 117 | 15 | 1.01 | 0.96 - 1.06 | 0.697 |
CI = confidence interval. * = likelihood ratio statistic from the logistic regression model