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Table 6 Final models for the association between weekly building-related symptoms and all variables (Model 4)

From: Evaluating prevalence and risk factors of building-related symptoms among office workers: Seasonal characteristics of symptoms and psychosocial and physical environmental factors

Variable factors Eye irritation
OR (95% CI)
General symptomsl
OR (95% CI)
Upper respiratory
OR (95% CI)
Skin symptomsl
OR (95% CI)
N = 2330 N = 2275 N = 2260 N = 2436
Personal
 Gender (female) 1.67 (1.23–2.28)** 1.80 (1.36–2.38)** 2.27 (1.48–3.48)** 3.12 (1.48–6.59)**
 Age
  10–19 1.96 (0.19–19.71)
  20–29 3.24 (1.68–6.23)**
  30–39 2.16 (1.16–4.00)*
  40–49 1.66 (0.89–3.11)
  50–59 1.35 (0.71–2.58)
   ≥ 60 Ref.
   p for trend <0.001
  Contact lens use 1.59 (1.20–2.10)** 1.73 (1.16–2.57)**
  Pet ownership (Cat)    2.86 (1.28–6.43)*
Work environment
 No. of people in officea 1.19 (1.03–1.39)*
 Work station
 Floor carpet (with) 1.44 (1.07–1.95)* 1.53 (1.15–2.05)** 1.74 (1.10–2.75)*
 Reflection or glare in visionb 1.25 (1.07–1.45)** 1.32 (1.13–1.55)**
 Chair comfortc 1.37 (1.13–1.67)** 1.35 (1.11–1.63)** 1.74 (1.34–2.27)**
 Work with computer 5.51 (1.62–18.73)**   
 Use of odorous chemicalsd 1.11 (1.02–1.21)*
 Change in workplacee
 Painted wall    4.72 (1.57–14.22)**  
Workplace conditions in last 4 weeksf
 Too little air movement 1.37 (1.21–1.56)** 1.26 (1.05–1.50)*
 Varying room temperature 1.23 (1.07–1.42)**
 Too cold 1.45 (1.21–1.73)**
 Air too humid 1.20 (1.02–1.43)*
 Air too dry 1.46 (1.24–1.72)** 1.76 (1.44–2.14)** 2.71 (2.10–3.51)**
 Static electricity
 Noise 1.29 (1.05–1.59)* 1.54 (1.25–1.88)** 1.41 (1.09–1.82)**
 Dust and dirt 1.26 (1.00–1.58)*
 Tobacco smoke odor 1.21 (1.02–1.43)*
 Unpleasant chemical odor 1.96 (1.24–3.08)** 2.60 (1.63–4.15)**
 Unpleasant other odorg 1.22 (1.02–1.45)* 1.35 (1.14–1.61)**  
Job stressors
 Amount of workh 1.34 (1.19–1.51)** 1.38 (1.23–1.55)** 1.25 (1.06–1.46)**  
 Mental workloadh   
 Physical overloadi 0.70 (0.59–0.83)**  
 Interpersonal conflicth 1.42 (1.21–1.65)**
 Job controlh 0.80 (0.70–0.92)**
 Skill utilizationj
 Job suitabilityk   
 Work satisfactionk 0.76 (0.66–0.88)**
  1. Values are expressed as adjusted odds ratio (95% CI) for participants with complete data. Personal factors, work environment, workplace conditions in the last 4 weeks, and job stressors with p < 0.2 in univariate analyse are included in multivariate stepwise logistic regression analysis (forward, Wald). Ref. = referent. Significant at * p < 0.05, ** p < 0.01. Horizontal lines are expressed as the variable included in models
  2. a Number of people working in the room in which workstation of respondent is located. Six levels of response are 1) 1 person, 2) 2–3 persons, 3) 4–7 persons, 4) 8–20 persons, 5) 21–50 persons, and 6) ≥ 51 persons
  3. b Five levels of response are 1) rarely, 2) occasionally, 3) sometimes, 4) fairly often, and 5) very often
  4. c Four levels of response are 1) very comfortable, 2) reasonably comfortable, 3) somewhat uncomfortable, and 4) very uncomfortable
  5. d Five levels of response are 1) never, 2) less than 3 times/week, 3) 3–4 times a week, 4) about once a week, and 5) several times a day; with cleanser, glue, correction fluid, or other odorous chemicals
  6. e Change taken place within five meters of workstation in last 3 months
  7. f Four levels of response are 1) never, 2) 1–3 days, 3) 1–3 days per week, and 4) every or almost every workday
  8. g For example, body odor, food odor, or perfume
  9. h Five levels of response are 1) less/low, 2) somewhat less/low, 3) medium, 4) somewhat more/high, and 5) more/high
  10. i Four levels of response are 1) somewhat less/low, 2) medium, 3) somewhat more/high, and 4) more/high
  11. j Four levels of response are 1) less/low, 2) somewhat less/low, 3) medium, and 4) somewhat more/high
  12. k Four levels of response are 1) less/low, 2) somewhat less/low, 3) medium, and 4) more/high
  13. l For ensuring goodness of fit in the model, the variable highly correlated with other variable was excluded from the model, which variables were job suitability in general symptoms and unpleasant other odor in skin symptoms