Table 1 Clinical and demographic details of HRV-positive and negative children

Age (months) (median & IQR)

13.3(6.0-28.2)

11.7(6.7-24.6)

1.00(0.99-1.02)

0.68

Male n (%)

76 (59)

52 (41)

0.89(0.52-1.53)

0.67

Clinical symptoms n (%)

   Cough

114 (89)

83 (90)

1.13(0.47-2.74)

0.78

   Wheeze

108 (84)

79 (86)

1.13(0.53-2.40)

0.76

   Breathing difficulty

68 (53)

43 (47)

0.77(0.45-1.32)

0.35

   Rhinorrhea

86 (67)

59 (64)

0.87(0.50-1.53)

0.64

   Night waking

75 (59)

52 (57)

0.92(0.53-1.58)

0.76

   Fever >37.5C

43 (34)

46 (50)

1.98(1.14-3.42)

0.02

   Diarrhoea

17 (13)

10 (11)

0.80(0.35-1.83)

0.60

   Vomiting

51 (40)

23 (25)

0.50(0.28-0.91)

0.02

Duration of symptoms (days) (median & IQR)

3 (2-7)

4 (2-7)

0.99(0.96-1.02)

0.58

Previous episodes of wheezing (median & IQR)

3 (2-6)

3 (2-10)

0.98 (0.94-1.02)

0.27

   n = 0 (%)

29 (22.7)

21 (23)

   n = <3 (%)

40 (31.2)

22 (24)

0.98 (0.35-2.79)

0.97

   n = ≥3 (%)

59 (46.1)

49 (53)

0.99 (0.94-1.03

0.57

Hospital admission n (%)

   General ward

45(35.2)

26(28.3)

1.38(0.77-2.46)

0.28

   ICU

3(2.3)

4(4.4)

1.90(0.41-8.67)

0.41

Risk factors n (%)

   Premature birth (< 38 weeks gestation)

16(13)

19(21)

0.55(0.37-1.14)

0.10

   Smoker in house

54(45)

4 (50)

1.37(0.80-2.35)

0.25

   Relative with asthma

45(35)

2 (28)

1.38(0.34-1.11)

0.11