Table 2.

Characteristics of the interview participants compared to a national sample

Characteristic	OPTI-SCRIPT study N (%)	National estimatesa %
Number interviewed	17	476
Male (%)	13 (76.4)	69.0
Urban practice location	12 (70.6)	43.0
Single handed practices	3 (17.6)	35.0
>10 years in practice	14 (82.3)	No estimate
Interview method:
In person (%)	12 (70.5)	N/A
Telephone (%)	5 (29.5)
Average interview length (minutes)	14.5 (range 8.56 - 26.31)	N/A

N/A Not applicable

^a Based on a nationally representative sample of GPs from 2005 [52].