Table 1

Description of studies included in the analysis

Country

N

Type of study

Setting

Facility delivery rate

% LBW

Method of gestational age measurement


Asia

India (2000)[25]

12,936

RCT of newborn Vitamin A supplementation

Rural

63

33

LMP


Nepal (1999)[26]

4,130

Cluster RCT of multiple micronutrient supplementation

Rural

6

39

LMP


Nepal (2003)[28]

1,106

RCT of antenatal micronutrient supplementation

Peri-urban

53

22

Ultrasound


Nepal (2004)[27]

23,662

Cluster RCT of newborn skin-umbilical cord cleansing with chlorhexidine

Rural

10

30

LMP


Philippines (1983)[29]

3,080

Longitudinal Health-nutritional survey of infant feeding patterns

Urban

34

11

LMP, Ballard


Thai (2001)[30]

4,245

Prospective follow-up of birth cohort

Urban

99

8

Best obstetric estimate (LMP, ultrasound or neonatal assessment)


Africa

Burkina Faso (2004)[31]

1,373

RCT of multiple micronutrient supplementation

Rural

77

17

Ultrasound at recruitment


Burkina Faso (2006)[34]

1,316

RCT of maternal fortified food supplementation

Rural

84

16

Ultrasound at recruitment


Tanzania (2001)[32]

7,752

RCT of maternal multiple micronutrient supplementation

Urban

98

10

LMP


Zimbabwe (1997)[33,35]

14,110

RCT of postpartum maternal and neonatal Vitamin A supplementation

Urban

88

14

Capurro


Americas

Brazil (1982)[21]

5,914

Prospective cohort study

Urban

100

7

LMP


Brazil (1993)[22]

5,279

Prospective cohort study

Urban

100

9

LMP, Dubowitz


Brazil (2004)[23]

4,287

Prospective cohort study

Urban

100

11

LMP, Dubowitz, ultrasound if available


Peru (1995)[24]

978

RCT of maternal zinc supplementation

Urban

100

4

LMP, clinical indications


RCT = randomized controlled trial

LMP = last menstrual period

LBW = low birthweight

Kozuki et al. BMC Public Health 2013 13(Suppl 3):S2   doi:10.1186/1471-2458-13-S3-S2

Open Data