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Table 3 Weight and length parameters of male and female infants according to age for the current sample with reference to a previous cohort of South African VLBW infants

From: Growth of a cohort of very low birth weight infants in Johannesburg, South Africa

  Age (months)1 n(1)2 Mean ± SD(1)2 n(2)3 Mean ± SD(2)3 P 4
Male Weight (kg): 0-2 39 3.23 ± 0.58 42 3.20 ± 0.54 0.83
  6-8 38 7.54 ± 1.09 30 7.17 ± 1.38 0.22
  11-13 23 8.69 ± 1.56 29 8.69 ± 0.98 0.99
Length (cm): 0-2 39 49.76 ± 2.57 42 47.57 ± 2.18 <0.01
  6-8 38 65.56 ± 2.90 30 64.49 ± 3.29 0.16
  11-13 23 72.0 ± 4.02 29 71.93 ± 1.96 0.94
Female Weight (kg): 0-2 39 3.23 ± 0.79 81 3.36 ± 0.61 0.76
  6-8 36 7.19 ± 0.96 52 7.10 ± 0.98 0.66
  11-13 26 8.28 ± 1.26 50 8.35 ± 1.02 0.8
Length (cm): 0-2 38 49.91 ± 2.88 81 47.99 ± 2.27 <0.01
  6-8 35 64.86 ± 2.48 52 64.13 ± 2.43 0.18
  11-13 26 70.24 ± 3.26 50 70.92 ± 3.03 0.38
  1. 1 Postmenstrual age; 2Sample 1: Data from Cooper and Sandler13; 3Sample 2: Data from the current study; 4p value calculated using the unpaired t test