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Table 1 Newborn foot lengths measured by community volunteers and researcher using a hard transparent plastic ruler and using the counselling card

From: The reliability of a newborn foot length measurement tool used by community volunteers to identify low birth weight or premature babies born at home in southern Tanzania

  Community volunteer N = 142 Researcher N = 142
Mean length in cm (SD) 7.8 (0.3) 8.1 (0.3)
Range (cm) 7.0 - 8.7 7.2 – 8.8
  n,% (95% confidence interval) n,% (95% confidence interval)
Ruler measures categorised:   
  <7 cm 0 0
  7.0-7.9 cm 77, 54% (46–63) 49, 35% (27–43)
  ≥8 cm 65, 46% (37–54) 93, 65% (57–73)
Counselling card categories:   
  <7 cm 4, 3% (0–7) 1, 1% (0–4)
  7.0-7.9 cm 80, 56% (48–65) 65, 46% (37–54)
  ≥8 cm 58, 41% (33–49) 76, 54% (45–62)