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Table 1 Kappa analysis of exclusive breastfeeding from mother’s report vs DTM method using two different cut offs

From: Limitations of maternal recall for measuring exclusive breastfeeding rates in South African mothers

Time point

Cut off for EBF, NMOI g/day

Observed agreement, %

Expected agreement, %

p-value

Kappa value

6 weeks

≤ 25

52.17

45.18

0.078

0.13

≤ 82.6

76.09

72.50

0.181

0.13

3 months

≤ 25

36.49

36.79

0.525

0.00

≤ 82.6

51.35

52.05

0.573

−0.01

5.5 months

≤ 25

49.30

40.73

0.009

0.14

≤ 82.6

57.75

45.45

0.011

0.23

  1. DTM dose to mother, EBF exclusive breastfeeding, NMOI non-milk oral intake