Patient safety in Dutch primary care: a study protocol

Table 2 Overview of selection and review of patient records

	General practices
T_-1: 1-4 months before T₀	T ₀
T_-2: 0-12 months before T_-1	T ₀
	Out-of-hours primary care centres
T_-1: 1 week before T₀	T ₀
	T ₀	T_-2: 1 week before to 8 weeks after T_-1
	General dental practices
T_-1: 1-4 months before T₀	T ₀
T_-2: 0-12 months before T_-1	T ₀
	Midwifery practices
T_-1: end of midwifery care in 2008	T ₀
T_-2: 0-9 months before T_-1	T ₀
	Allied healthcare practices
T_-1: 0-12 months before T₀	T ₀
T_-2: 0-12 months before T_-1	T ₀

T_-2: review period of patient record, T_-1: date of patient contact with practice or office, T0: date of actual visit of reviewer to practice or office to select patient records (early 2009)

ISSN: 1748-5908