Does patient-physiotherapist agreement influence the outcome of low back pain? A prospective cohort study

Table 4 Relationship between agreement at baseline and change in functional limitations at follow-up

Agreement on:	β	95 % CI^c	P
1) Pain intensity ^a
Intercept	8.436	-14.520 – 31.392	.47
Baseline functional limitations	.334	.125 – .543	< .01*
Physiotherapist^b:
Underestimation (n = 4)	-12.618	-32.783 – 7.546	.22
Overestimation (n = 2)	-28.738	-55.963 – -1.513	.04*
2) Functional limitations
Intercept	-10.547	-33.707 – 12.613	.37
Baseline functional limitations	.173	-.058 – .403	.14
Physiotherapist^c:
Underestimation (n = 13)	5.938	-4.362 – 16.238	.25
Overestimation (n = 1)	21.142	-9.917 – 52.202	.18

*p < .05
^aModel using rank-transformed dependent variable
^bPhysiotherapist over- or underestimation by > 3/10 on the NRS, with control for patient's age, gender and psychological distress
^cPhysiotherapist over- or underestimation by > 30 % on the RMDQ, with control for patient's age, gender, baseline pain intensity, psychological distress, pain duration and site of pain
^dCI = Confidence interval
Total model (pain intensity) adjusted R ² = .288, p < .01
Total model (functional limitations) adjusted R ² = .456, p < .01

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