Table 2. Prevalence (n, %) of asthma and allergy among children with different pets keeping status.

	Prevalence, n (%)
	Group Ⅰa, n = 4707	Group Ⅱb, n = 342	Group Ⅲc, n = 740	Group Ⅳd, n = 598
Current wheeze	212 (4.7)	22 (6.9)	25 (3.6)	32 (5.8)
Current dry cough	611 (13.4)	64 (19.5)	86 (12.0)	67 (11.8)
Diagnosed asthma	209 (4.6)	13 (3.9)	33 (4.7)	21 (3.7)
Current rhinitis	1362 (30.2)	92 (29.1)	210 (30.4)	144 (26.1)
Diagnosed rhinitis	437 (9.8)	25 (7.7)	59 (8.3)	57 (10.3)
Current eczema	642 (14.3)	47 (14.6)	128 (18.4)	96 (17.4)
Diagnosed eczema	1811 (40.4)	117 (35.8)	296 (42.0)	214 (39.2)

^aGroup Ⅰ: Never have pets.

^bGroup Ⅱ: Having pets at current, but not early.

^cGroup Ⅲ: Having pets at early, but not currently.

^dGroup Ⅳ: Having pets all the time.