What factors explain the number of physical therapy treatment sessions in patients referred with low back pain; a multilevel analysis

Table 3 Characteristics of therapists (n = 97) and practices (n = 41) in the sample and in the Netherlands (12,695 therapists)

		Sample				Dutch population of physical therapists [15]
		%	(N)	Mean	(SD)	%	(N)	P
Physical therapist	Male	57.7	(56)			50.1	(6,359)	0.14
	< 45 years	50.5	(49)			56.4	(7,049)	0.32
	Registration quality register – manual therapy	12.4	(12)
	Number of patient-related hours per week
	< 20 hours	23.7	(23)
	20–40 hours	61.9	(60)
	> 40 hours	14.4	(14)
	Additional training LPB	58.8	(57)
	Additional training LBP guideline	39.2	(38)
	Feasibility of the LBP guideline
	< 7 points	39.2	(38)
	> 7 points	43.3	(42)
	Unknown	17.5	(17)
	Number of new patients with LBP per therapist per month	1.6	(1.1)
Practice	Single-handed	24.4	(10)

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