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Table 1 Demographic and clinical characteristics of the study population

From: Prevalence of allergic and nonallergic rhinitis in a rural area of northern China based on sensitization to specific aeroallergens

  Total N = 1084 n (%) Clinical AR N = 167 n (%)a Clinical NAR N = 340 n (%)b Non self-reported rhinitis N = 577 n (%)c
Gender
 Male 405 (37.36) 68 (40.72) 139 (40.88) 198 (34.32)
 Female 679 (62.64) 99 (59.28) 201 (59.12) 379 (65.68)
Age (years)
 ≤ 14 56 (5.17) 9 (5.39) 19 (5.59) 28 (4.85)
 15–29 99 (9.13) 14 (8.38) 20 (5.88) 65 (11.27)
 30–44 294 (27.12) 59 (35.33) 67 (19.71) 168 (29.12)
 45–60 624 (57.56) 82 (49.10) 232 (68.24) 310 (53.73)
 > 60 9 (0.83) 2 (1.20) 1 (0.29) 6 (1.04)
Yearly income (Chinese yuan)
 Minimum (< 4604) 283 (26.11) 46 (27.54) 18 (5.29) 37 (6.41)
 Low (4604–9568) 67 (6.18) 12 (7.19) 14 (4.12) 39 (6.76)
 Below-moderate (9568–12,978) 65 (6.00) 12 (7.19) 30 (8.82) 71 (12.31)
 Moderate (12,978–17,684) 112 (10.33) 11 (6.59) 24 (7.06) 56 (9.71)
 Above-moderate (17,684–24,106) 89 (8.21) 9 (5.39) 24 (7.06) 32 (5.55)
 High (24,106–40,019) 68 (6.27) 12 (7.19) 19 (5.59) 21 (3.64)
 Maximum (> 40,019) 52 (4.80) 12 (7.19) 18 (5.29) 37 (6.41)
Medical history
 Asthma 40 (3.69) 13 (7.78) 20 (5.88) 7 (1.21)
 Atopic dermatitis 99 (9.13) 28 (16.77) 50 (14.71) 21 (3.64)
 CRS 71 (6.55) 21 (12.57) 35 (10.29) 15 (2.60)
Family history
 AR 85 (7.84) 30 (17.96) 39 (11.47) 16 (2.77)
 Asthma 44 (4.06) 8 (4.79) 24 (7.06) 12 (2.08)
 Atopic dermatitis 53 (4.89) 16 (9.58) 23 (6.76) 14 (2.43)
 CRS 45 (4.15) 9 (5.40) 22 (6.47) 14 (2.43)
Smoking habit
 Smoker 191 (17.62) 32 (19.16) 74 (21.76) 88 (15.25)
 Non-smoker 833 (76.85) 132 (79.04) 257 (75.59) 489 (84.75)
  1. CRS, chronic rhinosinusitis
  2. aSelf-reported AR subjects showing positive skin prick test, b self-reported AR subjects with negative skin prick test, c non self-reported rhinitis subjects without symptoms of rhinitis
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