Significance of platelet count in children admitted with bronchiolitis

Table 1 Characteristics of 305 children admitted with bronchiolitis

	Platelet count (× 109/L) n (%) or mean ± SD		P value
	> 500	< 500
Children	217 (71)	88 (29)
Age (mo)	7.3 ± 5.8	4.8 ± 4.1	< 0.0011
Males	132 (74)	47 (26)	0.22
Born < 38 wk gestation	32 (65)	17 (35)	0.32
Duration of illness before admission (d)	2.9 ± 1.2	2.7 ± 1.4	0.31
Fever (> 38 °C) on admission	148 (73)	55 (27)	0.32
Blood white cell count (× 109/L)	3.5 ± 1.1	3.2 ± 0.5	0.81
Nasopharyngeal aspirate isolate
RSV	189 (74)	66 (26)
Adenovirus	13 (57)	10 (43)
Influenza	6 (46)	7 (54)	0.09
RSV + Adenovirus	5 (62)	3 (38)
RSV + Influenza	3 (50)	3 (50)
Serum CRP (mg/L)	1.4 ± 1.3	1.5 ± 1.2	0.51
Duration of hospitalization (d)	4 ± 5.5	4.4 ± 4.2	0.61
Admitted to intensive care	25 (62)	15 (37)	0.22

¹t-test;

²χ² test or Fisher exact test if number < 5. n: Number of infants; SD: Standard deviation; RSV: Respiratory syncytial virus; CRP: C-reactive protein.