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. 2017 Dec 12;17:192. doi: 10.1186/s12890-017-0536-x

Table 1.

Univariate associations between ESS score > 10 and independent variables of interesta

Variables ESS Score, n (%) Univariate OR (95% CI)
Normal (n = 738) Abnormal (n = 91)
Demographics
 Sex
  Female (reference) 369 (87.6) 52 (12.4) 1.00
  Male 369 (90.4) 39 (9.6) 0.76 (0.48–1.20)
 Age, in years
  17–25 (reference) 266 (92.7) 21 (7.3) 1.00
  26–35 180 (88.2) 24 (11.8) 1.71 (0.90–3.26)
  36–45 119 (89.5) 14 (10.5) 1.45 (0.69–3.03)
  46–55 113 (91.1) 11 (8.9) 1.30 (0.58–2.90)
   > 55 60 (74.1) 21 (25.9) 4.46 (2.34–8.52)
 Educational level
  Completed postsecondary education (reference) 103 (88.8) 13 (11.2) 1.00
  Completed university 89 (88.1) 12 (11.9) 1.02 (0.41–2.53)
  Completed high school 191 (92.7) 15 (7.3) 0.61 (0.26–1.43)
  Less than high school 354 (87.6) 50 (12.4) 1.12 (0.56–2.25)
 Marital status
  Widowed/divorced/separated/single (reference) 430 (88.5) 56 (11.5) 1.00
  Married/common in law 288 (89.4) 34 (10.6) 0.88 (0.56–1.38)
 Body mass index, kg/m2
  Normal (<25) (reference) 251 (90.0) 28 (10.0) 1.00
  Overweight (25–29.9) 213 (88.4) 28 (11.6) 1.14 (0.64–2.05)
  Obese (≥30) 258 (88.4) 34 (11.6) 1.15 (0.68–1.95)
 Smoke status
  Non-smoker (reference) 68 (86.1) 11 (13.9) 1.00
  Ex-smoker 85 (84.2) 16 (15.8) 1.27 (0.51–3.16)
  Current smoker 585 (90.1) 64 (9.9) 0.72 (0.36–1.42)
 In past 12 months, had ≥5 drinks on one occasion
  No (reference) 156 (88.1) 21 (11.9) 1.00
  Yes 579 (89.6) 67 (10.4) 0.84 (0.50–1.41)
 Employment status
  Yes (reference) 388 (89.2) 47 (10.8) 1.00
  No 346 (88.7) 44 (11.3) 1.05 (0.67–1.64)
Doctor ever diagnosed:
 Sinus trouble
  No (reference) 470 (91.8) 42 (8.2) 1.00
  Yes 189 (83.3) 38 (16.7) 2.24 (1.42–3.54)
 Heart problem
  No (reference) 674 (90.2) 73 (9.8) 1.00
  Yes 62 (78.5) 17 (21.5) 2.55 (1.47–4.41)
 Tuberculosis
  No (reference) 597 (90.5) 63 (9.5) 1.00
  Yes 43 (78.2) 12 (21.8) 2.71 (1.30–5.63)
 Attack of bronchitis
  No (reference) 466 (91.6) 43 (8.4) 1.00
  Yes 180 (82.9) 37 (17.1) 2.22 (1.38–3.56)
 Ever had asthma
  No (reference) 616 (89.3) 74 (10.7) 1.00
  Yes 122 (87.8) 17 (12.2) 1.12 (0.64–1.95)
Questionnaire ascertained conditions
 Chronic Lung Diseaseb
  No (reference) 554 (91.6) 51 (8.4) 1.00
  Yes 184 (82.1) 40 (17.9) 2.35 (1.51–3.64)
 SOB
  No (reference) 367 (94.3) 22 (5.7) 1.00
  Yes 365 (84.1) 69 (15.9) 3.15 (1.92–5.18)
 Loud snoring
  No (reference) 626 (89.9) 70 (10.1) 1.00
  Yes 110 (84.0) 21 (16.0) 1.68 (1.02–2.77)
Socio-economic Status
 Money left over at end of the month
  Some (reference) 188 (86.2) 30 (13.8) 1.00
  Just enough 171 (90.5) 18 (9.5) 0.64 (0.34–1.22)
  Not enough 340 (90.2) 37 (9.8) 0.65 (0.37–1.15)
 Annual household income
  $20,000 and over (reference) 199 (91.7) 18 (8.3) 1.00
  $10,000–$19,999 106 (86.9) 16 (13.1) 1.58 (0.76–3.27)
  Less than $10,000 188 (85.8) 31 (14.2) 1.75 (0.88–3.47)
  Refusal/not stated 245 (90.4) 26 (9.6) 1.09 (0.54–2.19)
 Home need repairing
  No (reference) 205 (89.5) 24 (10.5) 1.00
  Minor 188 (85.1) 33 (14.9) 1.51 (0.82–2.80)
  Major 188 (85.1) 28 (8.7) 0.81 (0.46–1.43)
 Home crowded status (person per room)
  one or less person per room (reference) 188 (85.1) 52 (9.7) 1.00
  More than one person per room 215 (86.3) 34 (13.7) 1.44 (0.88-2.36)

aRow percentages are presented

b“Chronic Lung Disease” includes groups of chronic cough, chronic phlegm, chronic bronchitis, emphysema and chronic obstructive pulmonary disease