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Table 1 Characteristics of newborns measured on the first day only and for the sub-sample of babies also measured on the fifth day

From: Measuring newborn foot length to identify small babies in need of extra care: a cross sectional hospital based study with community follow-up in Tanzania

  All babies N = 529 First day only N = 346 First and fifth day N = 183 χ2 4 p-value
Gender n % n % n %  
Male 283 52 188 54 95 52  
Female 246 48 158 46 88 48 0.5
Birth weight1        
Very LBW (<1500 g) 8 2 7 2 1 0.5 0.1
LBW (<2500 g) 78 15 55 16 23 12 0.2
Foot length2        
Very short feet (<7 cm) 14 3 12 3 2 1 0.1
Short feet (<8 cm) 275 52 178 51 97 53 0.7
Gestation weeks3        
Premature (<37 weeks) 44 8 30 9 14 8 0.6
  1. 1Birth weight measured within 24 hours using digital Salter scales. Mean birth weight for all babies was 2922 grams (95% confidence interval 2880-2964).
  2. 2Foot length measured within 24 hours of birth using a hard ruler. Mean foot length for all babies was 7.8 cm (95% confidence interval 7.8-7.9)
  3. 3Gestation age in weeks estimated using the Eregie method [18].
  4. 4 χ2 test to look for evidence of difference between the first day only and the first and fifth day subset of newborns.