Table 3

Adjusted associations of respiratory symptoms and being short sleeper and long sleeper. Adjustment with†  and without* BMI

Short sleepers
Adj. OR (95% CI) without BMI*
Short sleepers
Adj. OR (95% CI) with BMI †
Long sleepers
Adj. OR (95% CI) without BMI*
Long sleepers
Adj. OR (95% CI) with BMI
Wheezing last 12 months 1.76 (1.29–2.39) 1.54 (1.12–2.13) 0.94 (0.60–1.45)0.94 (0.59–1.50)
Woken with chest tightness last 12 months 2.37 (1.67–3.36) 2.10 (1.45–3.03) 1.24 (0.75–2.04)0.98 (0.55–1.76)
Shortness of breath while at rest last 12 months 2.47 (1.54–3.95) 2.42 (1.49–3.93) 1.30 (0.64–2.66)0.97 (0.41–2.29)
Shortness of breath after strenuous activity last 12 months 1.81 (1.32–2.49) 1.55 (1.10–2.19) 1.75 (1.19–2.58) 1.80 (1.17–2.77)
Woken with shortness of breath last 12 months 2.48 (1.62–3.81) 2.40 (1.55–3.72) 1.94 (1.07–3.51) 1.66 (0.85–3.22)
Woken by coughing last 12 months 1.54 (1.15–2.07) 1.43 (1.05–1.94) 1.12 (0.76–1.63)1.10 (0.73–1.66)
Cough in morning during the winter 1.96 (1.37–2.83) 2.01 (1.38–2.92) 1.51 (0.92–2.47) 1.68 (1.00–2.80)
Cough during day or night during the winter 1.91 (1.37–2.66) 1.91 (1.35–2.70) 0.97 (0.58–1.60)1.06 (0.63–1.79)
Phlegm in morning during the winter 1.83 (1.28–2.61) 1.81 (1.26–2.62) 1.24 (0.75–2.05)1.28 (0.75–2.18)
Phlegm during day or night during the winter 2.00 (1.38–2.90) 2.02 (1.38–2.96) 1.17 (0.67–2.05)1.04 (0.56–1.93)
Chronic bronchitis 1.74 (1.10–2.77) 1.63 (1.00–2.66) 1.39 (0.74–2.60)1.29 (0.65–2.55)
Asthma ever1.11 (0.73–1.69)0.97 (0.62–1.52)1.51 (0.95–2.42)1.54 (0.93–2.54)
nGOR 1.82 (1.27–2.60) 1.74 (1.20–2.52) 0.87 (0.52–1.45)0.92 (0.54–1.58)
Chronic bronchitis 1.74 (1.10–2.77) 1.63 (1.00–2.66) 1.39 (0.75–2.60) 1.23 (0.65–2.54)
COPD 2.73 (1.26–5.91) 2.64 (1.15–6.06) 1.30 (0.39–4.39)1.98 (0.23–4.25)
Nasal allergies including hay fever1.18 (0.86–1.62) 2.64 (1.15–6.06) 1.09 (0.74–1.61)0.98 (0.23–4.25)
Nose blocked for >12 weeks last 12 months 2.66 (1.72–4.10) 2.66 (1.71–4.14) 2.07 (1.17–3.69) 1.74 (0.90–3.37)
  • Significance (p<0.05) is marked as bold. Logistic regression model. Normal sleep length was used as a reference group.

  • *Adjusted for gender, age, centre, marital status, exercise and current smoking.

  • †Adjusted for gender, age, centre, marital status, exercise and current smoking and BMI.

  • BMI, body mass index; COPD, chronic obstructive pulmonary disease; nGOR, nocturnal gastro-oesophageal reflux.