Table 3.

The sub groups of knee surgeons who gave the highest preoperative information (N = 219)

Characteristics of knee surgeons:	Years of experience	P-value*	TKA volume per year	P-value*	Knee revision per year	P-value*	Knee specialist	P-value*
Preoperative measures:
Written information	> 30	0.72	> 100	0.25	> 5	0.31	100%	0.24
Oral information	15–30	0.39	22–50	0.50	0	0.33	50%	0.32
Expectations	> 30	0.22	> 100	0.51	0	0.19	50%	0.08
Dissatisfaction rate	> 30	0.69	> 100	0.17	< 5	0.47	50%	0.79
Surgery on mild indication	> 30	0.89	< 22	0.70	< 5	0.04	25%	0.77
Psychiatric history	< 5	0.09	> 100	0.59	< 5	0.70	50%	0.94
Psychiatric consultation	> 30	0.03	22–50	0.07	0	0.31	25%	0.07
Psychiatric impact	< 5	0.14	22–50	0.36	0	0.18	50%	0.38

The table shows the highest preoperative given information according to different groups of knee surgeons that were described in Table 1

*Chi ² test