Factors | Preterm Cases (%) | No Preterm (%) | P value | OR | 95% CI |
---|---|---|---|---|---|
 | N=181 | N=1445 |  |  |  |
Age (years) | Â | Â | Â | Â | Â |
· <20 | 7 (3.9) | 43 (3.0) | 0.63 | 1.3 | 0.54 – 3.57 |
· 20 – 35 | 151 (83.4) | 1243 (86.0) |  | 1.0 | 1.0 |
· >35 | 23 (12.7) | 159 (11.0) | 0.55 | 1.2 | 0.72 – 1.94 |
Parity | Â | Â | Â | Â | Â |
· 0 | 54 (29.8) | 316 (21.9) | 0.20 | 1.3 | 0.87 – 1.94 |
· 1 – 2 | 71 (39.3) | 541 (37.4) |  | 1.0 | 1.0 |
· >2 | 56 (30.9) | 588 (40.7) | 0.10 | 0.7 | 0.49 – 1.07 |
Marital status | Â | Â | Â | Â | Â |
· Married | 145 (80.1) | 1261 (87.3) |  | 1.0 | 1.0 |
· Not married | 36 (19.9) | 184 (12.7) | <0.05 | 1.7 | 1.12 – 2.57 |
Work status | Â | Â | Â | Â | Â |
· Working | 138 (76.2) | 1068 (73.9) | 0.59 | 1.12 | 0.77–1.64 |
· Not working | 43 (23.8) | 374 (26.1) |  | 1.0 | 1.0 |
Stress at work | Â | Â | Â | Â | Â |
· Stressful | 90 (65.2) | 614 (57.3) | 0.04 | 1.4 | 1.01 – 2.06 |
· Not stressful | 48 (34.8) | 457 (42.7) |  | 1.0 | 1.0 |
Social Class[16] | Â | Â | Â | Â | Â |
· I & II | 20 (11.0) | 146 (10.1) | 0.70 | 0.70 | 0.48 – 1.56 |
· III | 49 (27.1) | 415 (28.7) |  | 1.0 | 1.0 |
· IV & V | 112 (61.9) | 884 (61.2) | 0.87 | 0.9 | 0.54 – 1.59 |