Mean severity

Group A [vit. A]

Group B [control]

Table 1. Severity of symptoms observed during the six follow‐up visits

Mean severity

Group A [vit. A]

Group B [control]

n = 58

n = 56

0.00

29

34

0.16

9

9

0.33

8

4

0.50

3

‐

0.55

‐

4

0.66

3

2

0.83

2

2

1.16

1

‐

1.33

1

‐

1.33

1

‐

2.00

1

1

Mean

0.2650

0.1775

SD

0.4221

0.3370

Mann‐Whitney U test = 1423, standardized U = 1.14<1.96.

Follow‐up visit No.

Group A [vit. A]

Group B [control]

Total

Table 2. Distribution of infants according to the number of follow‐up visits in which symptoms were present.

Follow‐up visit No.

Group A [vit. A]

Group B [control]

Total

n = 58

n = 56

0

29

34

63

1

13

11

24

2

8

5

13

3

4

3

7

4

0

2

2

5

3

0

3

6

1

1

2

Mean (2 weeks)

1.06

0.78

‐

SD (2 weeks)

1.48

1.28

‐

Chi‐square test = 1.505; df = 3; p > 0.5.