Table 5. Multivariable logistic regression analyses: associations between GPs participating on callout in vignettes and OOH clinic characteristics

	GPs participating on callout in vignette, n (%)	OR crude (95 % CI)	OR adjusted (95% CI)
C o-located ambulance	694/925 (75%)
YesNo	277/357 (78%)417/568 (73%)	0.80 (0.59 to 1.09)Ref	0.88 (0.63 to 1.23) Ref
Dedicated response vehicle	703/937 (75%)
Yes, with driverYes, without driverNo	138/167 (83%)123/163 (76%)442/607 (73%)	1.78 (1.15 to 2.75)^a1.15 (0.77 to 1.71)Ref	2.06 (1.25 to 3.41)^a 0.92 (0.60 to 1.42) Ref
Distance to hospital	715/953 (75%)
More than 60 minutesLess than 60 minutes	200/244 (82%)515/709 (73%)	1.71 (1.19 to 2.47)^aRef	1.47 (0.97 to 2.23) Ref
Team training	730/968 (75%)
Never or not relevantLess than annuallyAnnuallySeveral times a year	300/436 (69%)196/257 (76%)167/200 (84%)67/75 (89%)	Ref1.46 (1.03 to 2.07)^a2.29 (1.50 to 3.51)^a3.80 (1.77 to 8.12)^a	Ref 1.44 (0.98 to 2.11) 1.78 (1.12 to 2.82)^a 3.78 (1.64 to 8.68)^a

Also adjusted for sex, age, specialist status, and OOH clinic location (large city: Oslo, Bergen, Stavanger, or Trondheim; single municipality or inter municipality).
a P<0.05.