Table 2.

Descriptive statistics of participant characteristics.

Variables	Control (n = 42)				Case (n = 7)				Total (n = 49)
	n	Nmiss	Mean(±SD)	min-max	n	Nmiss	Mean(±SD)	min-max	n	Nmiss	Mean(SD)	min-max
Age in months	42	0	34.4(± 19.9)	7, 72	7	0	31,4(± 22.2)	1, 72	49	0	34(± 20.1)	1, 72
Height (cm)	39	3	93.7(± 17.8)	50, 125	7	0	93.1(± 21.3)	55, 114	46	3	93.6(± 18.1)	50, 125
Weight (kg)	42	0	15.5(± 7.2)	7.6, 49.8	7	0	13.8(± 5.3)	4.4, 21	49	0	15.3(± 6.9)	4.4, 49.8
BSA	39	3	0.6(± 0.2)	0.3, 1.3	7	0	0.6(± 0.2)	0.3, 0.8	46	3	0.6(± 0.2)	0.3, 1.3
BMI	39	3	17(± 3.9)	11.1, 32.1	7	0	15.6(± 2.7)	11.3, 20.3	46	3	16.7(± 3.8)	11.1, 32.1
Temperature in arrival (C)	42	0	37.6(± 0.8)	36, 39.8	7	0	37.1(± 0.5)	36.2, 37.8	49	0	37.5(± 0.8)	36, 39.8
Respiratory rate	42	0	44.8(± 11.8)	24, 76	7	0	45(± 4.7)	40, 53	49	0	44.8(± 11)	24, 76
Heart rate	42	0	150.5(± 18.6)	109, 185	7	0	191(± 42.8)	153, 253	49	0	156.2(± 27)	109, 253
Total dose levalbuterol given in ED and hospital (mg)	42	0	0.1(± 0.5)	0, 3.1	7	0	0.8(± 1.7)	0, 4.4	49	0	0.2(± 0.8)	0, 4.4
Levalbuterol doses	42	0	0.1(± 0.8)	0, 5	7	0	1.3(± 2.6)	0, 7	49	0	0.3(± 1.2)	0, 7
Total dose of albuterol in ED and hospital (mg)	42	0	47.1(± 125.7)	0, 707.5	7	0	25.7(± 39.7)	0, 110	49	0	44(± 117.2)	0, 707.5
Albuterol doses	42	0	18.8(± 50.3)	0, 283	7	0	10.3(± 15.9)	0, 44	49	0	17.6(± 46.9)	0, 283
Levalbuterol plus albuterol doses	42	0	18.9(± 50.2)	0, 283	7	0	11.6(± 16.3)	0, 44	49	0	17.9(± 46.9)	0, 283
Beta agonist doses/time (hours)	39	3	0.7(± 1.1)	0, 4.6	7	0	1.8(± 2.3)	0, 6.5	46	3	0.9(± 1.3)	0, 6.5
Number of chronic asthma control medication	42	0	1(± 1)	0, 3	7	0	0.9(± 0.7)	0, 2	49	0	0.9(± 0.9)	0, 3
Number of days of illness prior to presentation	42	0	2.9(± 2.6)	1, 14	7	0	1.6(± 0.8)	1, 3	49	0	2.7(± 2.4)	1, 14