Table. Trends in emergency department visits, general ward hospitalizations, and intensive care unit hospitalizations for childhood asthma by year, age, and sex, from 2007 until 2012.

Variables	Total number of ED visits	GW hospitalizations (n)	GW hospitalization rates (%)	Adjusted OR	95% CI	P value	ICU hospitalizations (n)	ICU hospitalization rates (%)	Adjusted OR	95% CI	P value
Year				0.96	0.94-0.97	0.001			0.91	0.85-0.97	0.003
2007	5,534	2,522	45.6	1.00	Reference		34	0.6	1.00	Reference
2008	5,521	2,265	41.0	0.84	0.77-0.90	0.001	43	0.8	1.17	0.74-1.84	0.499
2009	7,862	3,572	45.4	1.04	0.97-1.12	0.245	117	1.5	2.45	1.66-3.59	0.001
2010	7,358	3,036	41.3	0.85	0.79-0.91	0.001	57	0.8	1.17	0.76-1.79	0.473
2011	8,563	3,852	45.0	0.98	0.91-1.05	0.537	52	0.6	0.97	0.63-1.51	0.907
2012	6,290	2,277	36.2	0.68	0.63-0.73	0.001	32	0.5	0.70	0.43-1.13	0.147
Age group				0.67	0.65-0.69	0.001			1.24	1.07-1.44	0.005
3-6 years	22,364	10,827	48.4	1.10	Reference		151	0.7	1.00	Reference
7-12 years	14,570	5,376	36.9	0.62	0.60-0.65	0.001	121	0.8	0.98	0.77-1.25	0.856
13-18 years	4,194	1,321	31.5	0.49	0.46-0.53	0.001	63	1.5	1.68	1.25-2.26	0.001
Sex				1.21	1.16-1.26	0.001			0.88	0.70-1.12	0.296
Male	26,646	10,909	40.9	1.00	Reference		232	0.9	1.00	Reference
Famale	14,482	6,615	45.7	1.21	1.16-1.26	0.001	103	0.7	0.88	0.69-1.11	0.272
Total	41,128	17,524	42.6				335	0.8

ED, emergency department; GW, general ward; OR, odds ratio; CI, confidence interval; ICU, intensive care unit.