Table 4 Patterns of changes in estimate of exclusive breastfeeding prevalence among infants aged = < 6 months using *short period recalls and 24-h recall by using 14 repeated 24-h recalls as *reference among different age groups, Butajira, Ethiopia, 2018

24 h recall

88.0 (80.9, 92.6)

20.0 (12.2, 27.8)

< 0.0001*

2 days recall

80.8 (72.8, 86.8)

12.8 (6.1, 19.4)

< 0.0001*

3 days recall

75.2 (67.6, 82.1)

7.2 (0.8, 13.5)

< 0.0126*

4 days recall

74.4 (65.9, 81.3)

6.4 (0.7, 12.0)

<  0.0114*

5 days recall

74.4 (65.9, 81.3)

6.4 (0.7, 12.2)

<  0.0114*

6 days recall

74.4 (65.9, 81.3)

6.4 (0.7, 12.0)

<  0.0114*

7 days recall

75.2 (67.6, 82.7)

7.2 (0.8, 13.5)

<  0.0126*

8 days recall

76.8 (68.4, 83.4)

8.8 (2.1, 15.4)

< 0.0045*

9 days recall

76.8 (68.4, 83.4)

8.8 (2.1, 15.8)

<  0.0076*

10 days recall

80.0 (71.9, 86.1)

12.0 (4.3, 19.6)

< 0.0011*

11 days recall

79.2 (71.1, 85.5)

11.2 (3.6, 18.7)

< 0.0017*

12 days recall

78.4 (70.2, 84.8)

10.4 (2.6, 18.1)

< 0.0046*

13 days recall

84.0 (76.3, 89.5)

16.0 (8.7, 23.2)

< 0.0001*

14 days recall

85.6 (74.5, 88.1)

17.6 (9.7, 25.4)

< 0.0001*

Recall period

EBF percent (95% CI)

% overestimation (95% CI)

McNemar test

24 h recall

81.9 (12.2, 25.9)

28.3 (19.7, 36.9)

< 0.0001*

2 days recall

71.6 (63.1, 78.9)

17.3 (9.6, 25.0)

< 0.0001*

3 days recall

66.1 (57.3, 73.9)

12.5 (5.6, 19.6)

< 0.0001*

4 days recall

64.6 (55.7, 72.5)

11.0 (4.3, 17.7)

< 0.0005*

5 days recall

64.6 (55.7, 72.5)

11.0 (3.9, 18.1)

< 0.0013*

6 days recall

61.4 (52.6, 69.5)

7.8 (1.1, 14.7)

< 0.0213*

7 days recall

60.6 (51.7, 68.8)

7.1 (0.8, 13.3)

< 0.0225*

8 days recall

62.2 (53.3, 70.3)

8.6 (2.1, 15.2)

< 0.0074*

9 days recall

67.7 (58.9, 75.3)

14.1 (7.3, 21.1)

< 0.0001*

10 days recall

66.9 (58.2, 74.6)

13.4 (5.9, 20.9)

< 0.0002*

11 days recall

69.3 (60.6, 76.7)

15.7 (7.9, 23.6)

< 0.0001*

12 days recall

66.9 (58.1, 74.6)

13.4 (5.9, 20.9)

< 0.0002*

13 days recall

66.1 (57.4, 73.9)

12.6 (5.2, 19.9)

< 0.0004*

14 days recall

70.8 (59.8, 76.1)

17.3 (9.3, 25.4)

< 0.0001*

Recall period

EBF percent (95% CI)

% overestimation (95% CI)

McNemar test

24 h recall

46.7 (44.8, 61.4)

24.4 (16.6, 32.3)

< 0.0001*

2 days recall

42.5 (34.4, 50.9)

20.2 (12.7, 27.5)

< 0.0001*

3 days recall

35.3 (27.7, 43.6)

12.9 (5.6, 20.2)

< 0.0002*

4 days recall

34.5 (27.0, 42.9)

12.2 (6.1, 18.4)

< 0.0001*

5 days recall

32.4 (25, 40.7)

10.1 (3.6, 16.5)

< 0.0010*

6 days recall

30.2 (23.1, 38.5)

7.9 (1.19, 14.6)

< 0.0192*

7 days recall

29.5 (22.4, 37.8)

7.2 (1.13, 13.1)

< 0.0129*

8 days recall

30.9 (23.7, 39.2)

8.6 (2.1, 15.1)

<  0.0075*

9 days recall

30.2 (23.1, 38.5)

7.9 (1.5, 14.3)

< 0.0127*

10 days recall

36.7 (29.0, 45.1)

14.3 (6.8, 21.8)

< 0.0001*

11 days recall

39.6 (31.7, 48.0)

17.3 (9.3, 25.1)

< 0.0001*

12 days recall

42.5 (34.4, 50.9)

20.2 (12.4, 27.8)

< 0.0001*

13 days recall

39.6 (31.6, 48.0)

17.3 (9.3, 25.1)

< 0.0001*

14 days recall

38.13 (28.3, 44.4)

15.8 (7.8, 23.8)

< 0.0001*