TABLE 3.

Logistic regressions of sociodemographic and clinical variables associated with preterm birth in Khartoum, Sudan, 2020.

Variables	Adjusted
	AOR (95% CI)	P
Age, years	0.99 (0.971.03)	0.958
Parity	1.15 (1.09–1.21)	<0.001
Hemoglobin level, g/dl*	1.39 (1.26–1.53)	<0.001
Miscarriage/preterm birth
Yes	1.33 (0.99–1.80)	0.056
No	Reference
Maternal disease
Yes	0.66 (0.44–1.01)	0.056
No
Body mass index
Underweight	0.85 (0.239–3.073)	0.813
Normal weight	Reference
Overweight	0.880 (0.649–1.193)	0.409
Obese	1.133 (0.753–1.706)	0.548
Hemoglobin level, g/dl*
< 8.0	0.13 (0.01–1.03)	0.053
8.0–8.99	0.41 (0.22–0.77)	0.006
9.0–9.99	0.59 (0.38–0.91	0.019
10.0–10.99	Reference
11.0–11.99	0.53 (0.36–0.77)	0.001
12.0–13.0	1.62 (1.06–2.45)	0.023
>13.0	1.48 (0.83–2.63)	0.175
Anaemia*
Yes	0.41 (0.32–0.54)	<0.001
No	Reference

*Were entered one by one in the model, AOR, adjusted odds ratio; CI, confidence interval.