Table 3.
Association (coefficient and 95% confidence interval) of the physical component summary (PCS) and the mental component summa (MCS) with persistent* respiratory symptoms.
| PCS | MCS | |||
|---|---|---|---|---|
| coef | 95% CI | coef | 95% CI | |
| Persistent symptoms | ||||
| Wheezing | -4.06 | (-4.95, -3.16) | -2.45 | (-3.41, -1.49) |
| Wheezing and breathlessness | -6.08 | (-7.51, -4.65) | -2.19 | (-3.66, -0.72) |
| Wheezing without a cold | -4.13 | (-5.43, -2.84) | -1.88 | (-3.14, -0.61) |
| Woken up by tightness in chest | -7.15 | (-8.65, -5.65) | -4.02 | (-5.51, -2.52) |
| Breathlessness at rest | -8.05 | (-11.18, -4.93) | -3.81 | (-6.68, -0.94) |
| Breathlessness after exercise | -5.93 | (-7.11, -4.75) | -2.92 | (-4.12, -1.72) |
| Breathlessness at night | -5.68 | (-7.91, -3.45) | -0.78 | (-2.95,1.40) |
| Cough at night | -3.68 | (-4.46, -2.91) | -2.07 | (-2.92, -1.21) |
| Cough in the morning | -3.68 | (-4.89, -2.46) | -2.04 | (-3.31, -0.76) |
| Cough in the winter | -4.74 | (-6.05, -3.43) | -4.08 | (-5.50, -2.67) |
| Chronic chough | -4.83 | (-6.77, -2.90) | -3.96 | (-6.01, -1.90) |
| Phlegm in the morning | -3.92 | (-5.04, -2.80) | -2.04 | (-3.21, -0.86) |
| Phlegm in the winter | -4.41 | (-5.90, -2.93) | -2.80 | (-4.33, -1.28) |
| Chronic phlegm | -2.64 | (-4.42, -0.86) | -2.99 | (-5.03, -0.94) |
*Persistent meaning presence of the symptom both in ECRHS I and II. Coefficients give deviations from mean score compared to never having had the symptom. Adjusted for age, gender, smoking, comorbidity, occupation, BMI, and study centre.