Table 1.

Baseline characteristics of recruited participants in various years

Year	N	Boy/girl	Age	Father	Mother	F-M	None
2010	467	281/186	4.00 (3.00,5.50)	128	109	22	208
2011	341	200/141	4.00 (3.00,5.50)	105	73	33	130
2012	293	169/124	4.50 (3.50,6.50)	91	80	29	93
2013	178	103/75	4.50 (3.63,6.00)	64	35	17	62
2014	331	209/122	4.50 (3.50,6.00)	110	95	29	97
2015	279	163/116	4.50 (3.50,6.50)	107	66	20	86
2016	432	260/172	5.00 (4.00,6.50)	122	128	56	126
2017	551	298/253	5.00 (3.50,6.25)	170	129	57	195
2018	607	339/268	5.00 (4.00,7.00)	177	164	86	180
Total	3479	2022/1457	4.50 (3.50,6.00)	1074	879	349	1177
Year (N)	Total (N)	DF (N)	HDM (N)	Cat fur (N)	Dog fur (N)	RP (N)	WP (N)	Shrimp (N)	Crab (N)	Egg (N)	Milk (N)	Cashew (N)
2010	467	250	241	168	163	86	57	63	46	10	5	28
2011	341	176	176	143	128	80	40	21	20	8	3	10
2012	293	163	162	116	112	111	56	17	14	7	4	17
2013	178	87	89	67	64	76	42	7	8	5	4	5
2014	331	190	194	138	129	169	67	39	41	12	6	7
2015	279	127	129	86	87	123	61	18	18	13	6	5
2016	432	215	223	139	137	189	85	15	20	14	3	7
2017	551	257	255	125	125	217	94	13	21	21	10	11
2018	607	309	307	176	172	261	118	17	13	12	11	11
Total	3479	1774	1776	1158	1117	1312	620	210	201	102	52	101

Age: median (Q1, Q3), Family allergy history (Father: father allergy only, Mother: mother allergy only, F-M: both of father and mother allergy, none: neither of father nor mother allergy)

DF dermatophagoides farinae, HDM house dust mite, RP ragweed, WP willow