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Table 7 Comparison of prevalence of weekly building-related symptoms between winter and summer

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

Symptoms Prevalence a (%) Summer (vs. winter)
Winter Summer Crude OR (95% CI) Adjusted ORb (95% CI)
Tension, irritability, or nervousness 8.77 11.58 1.36 (1.15–1.61)** 1.30 (1.09–1.55)**
Tired or strained eyes 7.99 10.21 1.31 (1.10–1.57)** 1.27 (1.05–1.53)*
Dry, itching, or irritated eyes 7.15 7.52 1.06 (0.87–1.28) 1.01 (0.82–1.23)
Feeling depressed 5.12 6.83 1.36 (1.10–1.68)** 1.31 (1.05–1.63)*
Unusual tiredness, fatigue, or drowsiness 4.71 6.39 1.38 (1.11–1.72)** 1.36 (1.08–1.70)**
Sore or dry throat 5.69 3.70 0.64 (0.50–0.81)** 0.56 (0.43–0.72)**
Headache 2.35 2.65 1.13 (0.82–1.56) 1.06 (0.76–1.47)
Difficulty remembering things or concentration 1.45 2.19 1.52 (1.03–2.23)* 1.46 (0.98–2.17)
Sneezing 1.82 1.84 1.01 (0.69–1.47) 0.97 (0.65–1.43)
Cough 1.55 1.24 0.80 (0.52–1.23) 0.73 (0.47–1.14)
Dry or flushed facial skin 3.18 1.21 0.37 (0.25–0.55)** 0.33 (0.22–0.49)**
Stuffy or runny nose, or sinus congestion 1.71 1.18 0.68 (0.44–1.05) 0.67 (0.43–1.04)
Hands dry, Itching, red skin 1.43 1.11 0.78 (0.49–1.22) 0.68 (0.42–1.08)
Dizziness or lightheadedness 0.74 1.09 1.48 (0.87–2.53) 1.38 (0.80–2.36)
Nausea or upset stomach 0.86 1.09 1.27 (0.76–2.11) 1.10 (0.65–1.84)
Scaling/itching scalp or ears 1.01 0.78 0.77 (0.45–1.31) 0.68 (0.39–1.16)
Shortness of breath 0.27 0.50 1.84 (0.80–4.20) 1.58 (0.69–3.64)
Chest tightness 0.52 0.50 0.97 (0.48–1.95) 0.84 (0.40–1.75)
Wheezing 0.21 0.23 1.10 (0.39–3.14) 1.14 (0.38–3.40)
  1. a A participant experienced the symptom at least 1 day per week in the last 4 weeks that improved when the participant was away from the building. Significant at * p < 0.05, ** p < 0.01
  2. b Mantel-Haenszel test was carried out to estimate the adjusted odds ratio (OR) and the 95% confidence interval (95% CI) for the BRSs with/without adjustment for potential confounders, including age, gender, and job, which showed p < 0.2 in univariate analyses. Tarone test showed p > 0.05 in all symptoms