Table 5. Association of postoperative symptoms of psychological disorders with clinical outcome.

	Change of DASH score	Anchor question pain	Anchor question function
Postoperative Distress
Model 1
Coefficient	-20.49	-0.81	-0.89
95% CI	-26.41 - -14.57	-1.20- -0.41	-1.35- -0.43
P value	<0.001	<0.001	<0.001
Postoperative Distress
Model 2
Coefficient	-20.63	-0.95	-0.98
95% CI	-27.25 - -14.00	-1.39- -0.51	-1.49- -0.47
P value	<0.001	<0.001	<0.001
Postoperative Depression
Model 1
Coefficient	-18.07	-0.76	-0.91
95% CI	-24.61 - -11.53	-1.19- -0.34	-1.40- -0.42
P value	<0.001	0.001	<0.001
Postoperative Depression
Model 2
Coefficient	-16.59	-0.79	-0.93
95% CI	-23.86 - -9.32	-1.26- -0.32	-1.47- -0.38
P value	<0.001	0.001	0.001
Postoperative Anxiety
Model 1
Coefficient	-13.48	-0.54	-0.58
95% CI	-20.70 - -6.26	-1.00- -0.08	-1.1- -0.04
P value	<0.001	0.02	0.04
Postoperative Anxiety
Model 2
Coefficient	-11.62	-0.46	-0.47
95% CI	-19.15 - -4.10	-0.94–0.19	-1.03- -0.08
P value	0.003	0.06	0.10
Postoperative Somatisation
Model 1
Coefficient	-15.68	-0.42	-0.67
95% CI	-21.67 - -9.69	-0.82- -0.03	-1.12- -0.22
P value	<0.001	0.04	0.004
Postoperative Somatisation
Model 2
Coefficient	-14.37	-0.37	-0.62
95% CI	-21.23 - -7.51	-0.82–0.83	-1.13- -0.10
P value	<0.001	0.11	0.02

Model 1: adjusted for age, gender and preoperative DASH score in the models with DASH change score as outcome. In the models with the anchor questions, the models were additionally adjusted for previous surgery.

Model 2: Model 1 + also adjusted for preoperative psychological disorders