Table 4. Crude Relative Risk of Low Birthweight among Live Births by Reproductive Characteristics and Infections, for 3,110 Deliveries^* at Harare Maternity Hospital, Zimbabwe.

		All LBW	Term LBW	Preterm LBW
Characteristic		Relative Risk (95% CI)**	Relative Risk (95% CI)**	Relative Risk (95% CI)**
Received Prenatal Care	Yes	1.0	1.0	1.0
	No	2.29 (1.94–2.72)	1.77 (1.23–2.54)	3.30 (2.66–4.10)
Referral status	Yes	0.97 (0.78–1.20)	1.03 (0.69–1.52)	0.83 (0.62–1.10)
	No	1.0	1.0	1.0
Parity	0	1.08 (0.92–1.28)	1.01 (0.78–1.32)	0.86 (0.68–1.09)
	1–2	1.0	1.0	1.0
	Above 2	0.91 (0.69–1.18)	0.56 (0.34–0.93)	1.06 (0.78–1.46)
Number of children alive	None	1.18 (1.00–1.40)	1.43 (1.07–1.91)	0.94 (0.75–1.18)
	1 to 2	1.0	1.0	1.0
	More than 2	0.95 (0.71–1.25)	0.80 (0.47–1.37)	1.07 (0.76–1.49)
History of Abortion or Stillbirth	Yes	1.47 (1.13–1.91)	1.34 (0.83–2.18)	1.54 (1.09–2.19)
	No	1.0	1.0	1.0
History of Low birthweight	Yes	1.70 (1.27–2.26)	1.13 (0.59–2.14)	2.34 (1.64–3.34)
	No	1.0	1.0	1.0
Infant sex	Male	0.64 (0.55–0.75)	0.60 (0.45–0.78)	0.66 (0.53–0.81)
	Female	1.0	1.0	1.0
Infections
Malaria during pregnancy	Yes	1.93 (1.22–2.91)	0.45 (0.07–3.10)	2.66 (1.55–4.57)
	No	1.0	1.0	1.0
Urinary tract infection	Yes	0.82 (0.44–1.51)	0.44 (0.11–1.73)	1.12 (0.55–2.28)
	No	1.0	1.0	1.0
Syphilis	Yes	1.16 (0.47–2.89)	0.70 (0.10–4.76)	2.63 (1.06–6.51)
	No	1.0	1.0	1.0
	Not tested	1.49 (1.26–1.77)	1.16 (0.88–1.52)	2.08 (1.64–2.65)
Gonorrhea	Yes	0.49 (0.25–0.96)	1.04 (0.24 -4-41)	0.24 (0.10–0.58)
	No	1.0	1.0	1.0
	Not tested	0.60 (0.35–1.02)	1.02 (0.27 -3-90)	0.41 (0.22–0.76)

* based on data obtained from the records

** denotes 95% confidence intervals