Table 4 Determinants of reported frequency of use of salbutamol, inhaled steroids and antibiotics in outpatients with acute bronchiolitis

	2001 survey (n = 422‡)				2006 survey (n = 498‡)
	Unadjusted		Adjusted*		Unadjusted		Adjusted*
	OR (95% CI)	p Value	OR (95% CI)	p Value	OR (95% CI)	p Value	OR (95% CI)	p Value
Salbutamol
French (vs German)	2.00 (1.28 to 3.10)	0.002	2.55 (1.54 to 4.22)	<0.001	0.87 (0.59 to 1.30)	0.508	0.90 (0.60 to 1.36)	0.626
Paediatric pulmonologists	0.37 (0.18 to 0.76)	0.007	0.69 (0.32 to 1.52)	0.360	0.31 (0.13 to 0.75)	0.009	0.43 (0.18 to 1.03)	0.060
Hospital based vs practice	0.46 (0.29 to 0.74)	0.001	0.41 (0.25 to 0.70)	0.001	0.44 (0.28 to 0.69)	<0.001	0.54 (0.34 to 0.87)	0.010
>50 patients vs less	0.43 (0.22 to 0.87)	0.019	0.53 (0.25 to 1.13)	0.101	0.41 (0.22 to 0.77)	0.006	0.60 (0.31 to 1.15)	0.125
Inhaled steroids
French (vs German)	2.15 (1.43 to 3.24)	<0.001	2.14 (1.37 to 3.34)	0.001	1.36 (0.94 to 1.97)	0.107	1.40 (0.95 to 2.07)	0.092
Paediatric pulmonologists†	0.17 (0.08 to 0.36)	<0.001	0.24 (0.11 to 0.55)	0.001	0.34 (0.15 to 0.77)	0.01	0.46 (0.20 to 1.08)	0.076
Hospital based vs practice	0.29 (0.18 to 0.47)	<0.001	0.25 (0.15 to 0.42)	<0.001	0.44 (0.30 to 0.65)	<0.001	0.46 (0.30 to 0.70)	<0.001
>50 patients vs less	0.81 (0.42 to 1.59)	0.548	1.60 (0.78 to 3.30)	0.203	0.62 (0.36 to 1.08)	0.091	0.86 (0.47 to 1.57)	0.632
Antibiotics
French (vs German)	2.62 (1.76 to 3.90)	<0.001	2.83 (1.84 to 4.35)	<0.001	1.41 (0.95 to 2.11)	0.090	1.41 (0.94 to 2.13)	0.100
Paediatric pulmonologists	0.36 (0.18 to 0.74)	0.006	0.63 (0.29 to 1.36)	0.242	0.50 (0.19 to 1.35)	0.173	0.53 (0.19 to 1.47)	0.225
Hospital based vs practice	0.71 (0.46 to 1.10)	0.125	0.67 (0.42 to 1.07)	0.094	1.33 (0.88 to 2.02)	0.181	1.48 (0.95 to 2.30)	0.084
>50 patients vs less	0.68 (0.35 to 1.30)	0.246	0.76 (0.38 to 1.50)	0.426	0.82 (0.44 to 1.53)	0.530	0.73 (0.38 to 1.41)	0.347

Unadjusted and adjusted odds ratios were derived from ordered logistic regression.
*Adjusted for all variables in the list; †vs general paediatricians and other paediatric subspecialists; ‡regressions are based on 406 (2001) and 471 questionnaires (2006) for salbutamol, on 384 (2001) and 449 questionnaires (2006) for inhaled corticosteroids and on 386 (2001) and 449 questionnaires (2006) for antibiotics.