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Table 1 Demographic data and other characteristics of participants with and without idiopathic environmental intolerance attributed to electromagnetic fields (IEI-EMF)

From: Representative survey on idiopathic environmental intolerance attributed to electromagnetic fields in Taiwan and comparison with the international literature

Variable IEI-EMF (n = 155)
N (%)
Non-IEI-EMF (n = 3148)
N (%)
Survey population (n = 3303)
N (%)
Weighted % (95% confidence interval)
IEI-EMF Survey population
Sex
 Female 97 (62.6) 1832 (58.2) 1929 (58.4) 58.8 (50.6, 66.6) 49.6 (47.8, 51.3)
 Male 58 (37.4) 1316 (41.8) 1374 (41.6) 41.2 (33.4, 49.4) 50.4 (48.7, 52.2)
Age (year) 47.8 ± 13.63 48.56 ± 14.96 48.53 ± 14.90   
 18–34 29 (18.7) 589 (18.7) 618 (18.7) 40.5 (32.8, 48.8) 39.6 (38.0, 41.3)
 35–49 49 (31.6) 945 (30.0) 994 (30.1) 29.4 (22.5, 37.4) 28.7 (27.1, 30.2)
 50–64 58 (37.4) 1151 (36.6) 1209 (36.6) 19.6 (13.8, 27.0) 19.6 (18.3, 21.0)
  ≥ 65 19 (12.3) 463 (14.7) 482 (14.6) 10.5 (6.3, 16.7) 12.1 (11.0, 13.3)
Perceived Health Status
 Excellent 7 (4.5) 165 (5.2) 172 (5.2) 3.5 (1.3, 8.1) 5.0 (4.3, 5.8)
 Good 33 (21.3) 848 (26.9) 881 (26.7) 23.1 (16.9, 30.8) 23.8 (22.3, 25.3)
 Fair 94 (60.6) 1837 (58.4) 1931 (58.5) 57.0 (48.8, 64.9) 60.7 (59.0, 62.4)
 Poor 17 (11.0) 261 (8.3) 278 (8.4) 7.9 (4.3, 13.7) 9.0 (8.1, 10.0)
 Very poor 4 (2.6) 37 (1.2) 41 (1.2) 8.5 (4.8, 14.4) 1.6 (2.0, 20.9)
Impairment in Daily Activities 37 (23.9)* 513 (11.4) 395 (12) 24.6 (18.2, 32.4) 12.6 (11.5, 13.8)
Education Level
 Middle school and below 38 (24.5) 785 (25.2) 823 (25.2) 47.7 (39.6, 55.9) 40.2 (38.5, 41.9)
 High school 41 (26.5) 953 (30.6) 994 (30.4) 29.3 (22.4, 37.3) 38.3 (36.6, 39.9)
 College and above 76 (49.0) 1375 (44.2) 1451 (44.4) 23.0 (16.7, 30.6) 21.5 (20.2, 23.0)
Employment Status
 Employed 139 (89.67) 2817 (89.49) 2956 (89.49) 85.3 (78.5, 90.3) 88.1 (87.0, 89.2)
 Out of work/not working 10 (6.45) 152 (4.45) 162 (4.90) 7.0 (3.7, 12.5) 6.0 (5.3, 6.9)
 Unable to work 6 (3.87) 179 (5.24) 185 (5.60) 7.7 (4.2, 13.4) 5.9 (5.1, 6.7)
  1. *p < 0.05