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Table 4 Factors associated with short birth interval among mothers of child bearing age in Serbo town Jimma Zone, Southwest Ethiopia, 2017 (N = 314)

From: Suboptimal child spacing practice and its associated factors among women of child bearing age in Serbo town, JIMMA zone, Southwest Ethiopia

Variables category Short Birth Interval COR(95%CI) AOR(95%CI)
Yes No
N (%) N (%)
Age at first marriage < 18 years 72 (22.9% 27 (8.6%) 2.28 (1.36,3.82) 2.09 (1.19,3.69)*
≥18 years 116 (36.9%) 99 (31.5%) 1.00 1.00
Sex of index child Male 33 (10.5%) 30 (9.6%) 1.00 1.00
Female 93 (29.6%) 158 (50.6%) 1.87 (1.07,3.26) 1.96 (1.05,3.96)*
Death of child soon after birth Yes 29 (9.2%) 9 (2.9%) 1.00  
No 159 (50.6%) 117 (37.3%) 2.371 (1.08,5.19)  
Preference of birth interval < 36 months 73 (23.2%) 90 (28.7%) 5.733 (3.23,10.17) 4.71 (2.46,7.53)*
≥60 months 15 (4.8%) 10 (3.2%) 1.85 (0.78,4.36) 0.26 (0.08,0.90)
don’t know 7 (2.2%) 6 (1.9%) 1.44 (1.46,4.47) 0.27 (0.077,0.920)
36–60 months 93 (29.6%) 20 (6.4%) 1.00 1.00
Educational status No formal education 136 (43.3%) 92 (29.3%) 3.09 (1.68,3.71) 3.05 (1.60,3.83)*
Formal educated 52 (16.6%) 34 (10.8%) 1.00 1.00
Breastfeeding of previous to last child Yes 120 (38.2%) 163 (51.9%) 1.00  
No 6 (2%) 25 (8.0%) 3.07 (1.22,7.71)  
Duration of breast feeding < 24 months 47 (15.0%) 10 (3.2%) 3.84 (1.83,7.83) 3.09 (1.38,6.96)*
≥24 months 141 (44.9%) 116 (36.9%) 1.00 1.00
Use of modern contraceptives No 86 (27.4%) 31 (9.9%) 2.58 (1.57,4.25) 1.94 (1.09,3.45)*
Yes 102 (32.5%) 95 (30.3%) 1.00 1.00
  1. *Significant at p-value ≤0.05