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Table 1 Characteristics of Asthma-only and ACOS cases and population-based controls, the Finnish Environment and Asthma Study

From: Indoor mold odor in the workplace increases the risk of Asthma-COPD Overlap Syndrome: a population-based incident case–control study

CharacteristicAsthma-only (N = 365)ACOS (N = 25)Controls (N = 932)
Gender
 Men, no. (%)120 (32.9)a17 (68.0)438 (47.0)
 Women, no. (%)245 (67.1)a8 (32.0)b494 (53.0)
Age, years
 20–29, no. (%)87 (23.8)0 (0.0)141 (15.1)
 30–39, no. (%)80 (21.9)2 (8.0)224 (24.0)
 40–49, no. (%)85 (23.3)6 (24.0)254 (27.3)
 50–59, no. (%)88 (24.1)10 (40.0)240 (25.8)
 60–63, no. (%)25 (6.9)7 (28.0)73 (7.8)
Education
 Other, no. (%)72 (19.7)10 (40.0)158 (17.0)
 Vocational course, no. (%)57 (15.6)8 (32.0)104 (11.2)
 Vocational institution, no. (%)109 (29.9)1 (4.0)271 (29.1)
 College-level education, no. (%)82 (22.5)3 (12.0)261 (28.0)
 University or corresponding, no. (%)45 (12.3)3 (12.0)138 (14.8)
Parental asthma or allergyc,d, no. (%)128 (35.1)9 (36.0)204 (21.9)
Smokinge
 Never, no. (%)180 (49.3)2 (8.0)485 (52.0)
 Former, no. (%)83 (22.7)7 (28.0)205 (22.0)
 Current, no. (%)100 (27.4)16 (64.0)240 (25.8)
Second-hand smoke during past 12 months, at home or at work, no. (%)75 (20.6)8 (32.0)166 (20.6)
Having pets at some point, no. (%)262 (71.8)15 (60.0)616 (66.1)
  1. Definition of abbreviations: ACOS, Asthma-COPD Overlap Syndrome; NA, Not applicable
  2. aA GWAS analysis revealed that one woman with asthma-only had accidentally been recorded as a man during the data entry process, her gender record was corrected for this analysis
  3. bOne woman with ACOS was in a GWAS analysis found to be of Asian ethnicity and was excluded due to lack of appropriate reference population for lung function measures
  4. cParental asthma missing for 33 asthma-only cases, 3 ACOS cases and 90 controls
  5. dParental allergy missing for 33 asthma-only cases, 3 ACOS cases and 90 controls
  6. eSmoking information missing for 2 asthma-only cases and 2 controls