Metronidazole (local route only)

Study	Type of data	Exposure measurement	Outcome assessment	Adjustment
Kazy - Metronidazole, 2005	case control	The exposure data were obtained: (i) prospectively through antenatal care logbooks and other medical records; (ii) retrospectively by questionnaires completed by mothers; and (iii) by the help of regional nurses who visited and questioned all nonrespondent case and 200 control mothers.	Not specified.	Controls matched for sex, birth week and residence. POR adjusted for maternal age, parity and maternal diseases.
Zarante, 2009	case control	Information collected in 10 Colombian hospitals (NOS).	Information collected in 10 Colombian hospitals (NOS).	No match/adjustment for this group of exposure.