Table 1 Median change scores including median 95%CI ranges per PRO and per year

Hospitals (n (%))

55 (75.34)

68 (93.15)

68 (93.15)

67 (91.78)

n.a

64 (87.67)

68 (93.15)

69 (94.52)

NRS pain at rest (change score (95%CI range))

4.06 (0.87)^a

4.08 (0.93)

4.02 (0.84)

4.05 (0.70)^e

0.545 (0.101)

n.a

4.28 (0.85)^b

4.28 (0.84)^f

4.33 (0.74)^g

0.446 (0.053)

NRS pain during activity (change score (95%CI range))

5.08 (1.05)^a

5.09 (0.72)

5.10 (0.67)

5.07 (0.53)^e

0.377 (< 0.001)

n.a

5.76 (0.62)^b

5.81 (0.62)^f

5.76 (0.59)^g

0.623 (0.081)

HOOS-PS (change score (95%CI range))

29.38 (7.00)^a

30.76 (6.30)

30.60 (6.45)

30.19 (5.43)

0.066 (0.078)

n.a

34.72 (5.79)^d

34.57 (5.52)

35.26 (5.44)

0.694 (0.300)

EQ-5D descriptive system (change score (95%CI range))

0.250 (0.130)^a

0.250 (0.095)

0.260 (0.090)^f

0.250 (0.070)

0.090 (< 0.001)

n.a

0.290 (0.080)^d

0.290 (0.080)^f

0.280 (0.080)^f

0.281 (0.220)

EQ VAS (change score (95%CI range))

8.97 (11.90)^a

10.41 (5.70)^f

10.97 (5.91)^f

11.28 (4.59)

0.008 (< 0.001)

n.a

10.57 (5.92)^c

10.64 (5.40)^f

11.53 (5.55)^f

0.603 (0.183)