Table IV.

General practitioners' proposed duration of sick leave for respiratory tract diseases in Poland and Norway.

Disease	Poland, days, 95% CI	Norway, days, 95% CI	Adjusted difference1, days 95% CI
Female, age 30 Pneumonia	8.9 (8.4–9.4)	6.6 (6.2–7.0)	2.2 (1.4–3.0)
Male, age 50 Sinusitis	7.5 (7.1–7.9)	4.3 (4.0–4.6)	3.0 (2.4–3.5)
Female, age 45 Common cold	5.1 (4.9–5.4)	3.1 (2.9–3.4)	2.0 (1.5–2.5)
Male, age 55 Exacerbation of COPD	6.9 (6.5–7.3)	6.2 (5.8–6.5)	0.7 (0.1–1.3)

Note: ¹Difference in proposed duration of sick leave adjusted for sex, speciality, number of years worked as a physician, and average number of patients seen per hour, using ordinary least-squares regression with robust variances to account for non-normal distributions.