Folic acid level and preterm birth among Sudanese women

Table 2 binary regression of the factors associated with preterm delivery

Variables	OR	95% CI	P
Age, years	1.03	0.94–1.13	0.485
Parity	0.93	0.72–1.20	0.589
Education < secondary level	1.26	0.68–2.31	0.454
Housewives	0.78	0.29–2.11	0.633
History of miscarriage	0.84	0.27–2.57	0.768
Lack of antennal care	1.40	0.62–3.17	0.415
Body mass index, k/m²	0.95	0.84–1.08	0.503
Hemoglobin level, g/dl	0.78	0.45–1.34	0.373
Interpregnancy interval, months	1.06	1.00–1.12	0.049
Folic acid level	0.64	0.53–0.77	< 0.001

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