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Table 2 The environmental determinants of the eczema and EAH study population

From: Prevalence of adult eczema, hay fever, and asthma, and associated risk factors: a population-based study in the northern Grassland of China

Variables, n (%) Eczema EAH
No (n = 1766) Yes (n = 330) P No (n = 1989) Yes (n = 107) P
Pet keeping    0.188    0.330
 No 1379 (83.7) 268 (16.3)   1559 (94.7) 88 (5.3)  
 Yes 386 (86.4) 61 (13.6)   429 (96.0) 18 (4.0)  
Smoking habit    0.259    0.354
 Never 1301 (84.5) 238 (15.5)   1455 (94.5) 84 (5.5)  
 Current 325 (85.1) 57 (14.9)   368 (96.3) 14 (3.7)  
 Stopped 117 (79.6) 30 (20.4)   140 (95.2) 7 (4.8)  
Heating mode    0.073    0.029
 Wood heating 261 (88.8) 33 (11.2)   288 (98.0) 6 (2.0)  
 Coal heating 215 (84.3) 40 (15.7)   244 (95.7) 11 (4.3)  
 Central heating 1206 (83.5) 239 (16.5)   1363 (94.3) 82 (5.7)  
Antibiotic overuse (≥ 3 times/years)    0.235    < 0.001
 No 1364 (85.1) 239 (14.9)   1538 (95.9) 65 (4.1)  
 Yes 368 (82.7) 77 (17.3)   405 (91.0) 40 (9.0)  
Daily outdoor activity    0.133    0.857
 ≤ 1 h 276 (81.9) 61 (18.1)   319 (94.7) 18 (5.3)  
 2–3 h 836 (83.6) 164 (16.4)   947 (94.7) 53 (5.3)  
 ≥ 4 h 653 (86.3) 104 (13.7)   721 (95.2) 36 (4.8)  
  1. EAH Eczema with asthma and/or hay fever