Procalcitonin-guided antibiotic use versus a standard approach for acute respiratory tract infections in primary care: study protocol for a randomised controlled trial and baseline characteristics of participating general practitioners [ISRCTN73182671]

Table 1 Baseline characteristics of general practitioners

	Study GPs	All eligible GPs
	n = 53	n = 345
Age – median [IQR]	51 [42 – 55]	53 [47 – 58]
Female physicians – n (%)	9 (17)	64 (19)
Specialisation
General medicine – n (%)	25 (47)	188 (54)
Internal medicine – n (%)	26 (49)	148 (43)
Other – n (%)	2 (3.8)	9 (2.6)
Years in private practice – median [IQR]	15 [6.2 – 20]	16 [9.0 – 23]
Years of postgraduate training – median [IQR]	8.8 [7.7 – 9.7]	8.9 [7.6 – 11]
Years since diploma – median [IQR]	25 [15 – 29]	26 [14 – 31]

ISSN: 2731-4553