Table 3. Weight gain and prevalence of morbidity during pregnancy in women who gave birth at term, preterm, early preterm and late preterm.

Study Characteristic	Characteristic subcategory	Term Birth	Preterm	P-value	Early Preterm	P-value	Late Preterm	P-value
		(37–41 wks)	(24–36 wks) vs. Term		(24–33 wks) vs. Term		(34–36 wks) vs. Term
		(n = 1729)	(n = 351)		(n = 87)		(n = 264)
Weight	Weight gain (kg: mean, SD)	3.39 (2.14)	2.95 (1.9)	0.008	3.03 (2.08)	0.37	2.94 (1.88)	0.01
Anemia	Ever Anemia (Hb<11.0) (%)	64.2	73.5	0.001	76.7	0.03	72.6	0.01
	Persistent Anemia	29.7	29.7	0.99	20.0	0.07	32.8	0.33
Severe anemia	Ever Severe Anemia	7.9	11.2	0.068	14.3	0.10	10.5	0.18
	Persistent Severe Anemia	0.5	1.2	0.18	0	0.51	1.5	0.06
Malaria	Ever Malaria (slide positive) (%)	28.5	36.4	0.004	32.1	0.50	37.8	0.003
	Persistent Malaria	4.7	7.5	0.04	0	0.89	8.2	0.02
Syphilis	VDRL positive (%)	6.5	8.9	0.12	10.3	0.19	8.4	0.26
HIV	Seropositive (%)	25.4	28.1	0.30	29.5	0.42	27.7	0.43