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Table 1 Crude and adjusted model of determinants of short birth interval defined as birth-to-birth interval <33 months

From: Determinants and consequences of short birth interval in rural Bangladesh: a cross-sectional study

  Recommended birth interval (at least 33 months) Short birth interval < 33 months Crude OR 95% CI OR 95% CI
Age at onset of birth interval 22.0 year$ 22.8 year$ 1.04 1.03 1.06 1.11 1.08 1.15
Parity at onset of birth interval           
1 2,811 50.5% 708 51.8% reference    reference   
2 1,470 26.4% 329 24.0% 0.86 0.74 0.99 0.53 0.44 0.63
3 708 12.7% 168 12.3% 0.92 0.76 1.12 0.38 0.29 0.51
4+ 582 10.4% 163 11.9% 1.16 0.95 1.41 0.28 0.19 0.41
Age at first pregnancy 18.3 year$ 18.6 year$ 1.04 1.02 1.07 0.95 0.92 0.98
Adverse outcome of any previous pregnancy           
Yes 2,021 36.3% 651 47.6% 2.28 1.95 2.67 2.10 1.83 2.40
No 3,550 63.7% 717 52.4% reference    reference   
Religion           
Muslim (%) 4,605 82.6% 1,152 84.2% reference    reference   
Other (%) 966 17.3% 216 15.8% 0.86 0.73 1.02 0.68 0.53 0.87
Education           
None or primary education only 3,408 61.2% 810 59.2% reference    reference   
Secondary or above 2,163 38.8% 558 40.8% 1.11 0.98 1.26 1.26 1.09 1.45
Household assets           
0-3 4,043 72.7% 1040 76.0% 1.22 1.06 1.41 1.42 1.22 1.65
4+ 1,520 27.3% 328 24.0% reference    reference   
Tea garden resident           
Yes 663 11.9% 169 12.4% 1.06 0.88 1.28 1.41 1.07 1.87
No 4809 88.1% 1.199 87.6% reference    reference   
  1. Adjustment for all other variables. $Average.