Table 2.

Primary and secondary outcomes at baseline, 3 and 12 months. The estimates are given as mean values with 95% CI from the linear mixed effect model

	Pain education		Usual care
	n = 31	n	n = 29	n
Primary outcome
VAS during activity
Baseline	48 (41–55)	31	49 (42–57)	29
3 months	22 (14–30)	24	15 (8–23)	24
12 months	12 (5–18)	24	9 (3–15)	26
Secondary outcome
VAS during rest
Baseline	19 (13–24)	31	25 (19–30)	29
3 months	11 (6–16)	24	7 (3–12)	25
12 months	7 (1–12)	24	6 (1–12)	26
Oxford Knee Score
Baseline	21 (19–23)	31	22 (20–24)	29
3 months	28 (25–32)	24	31 (27–34)	25
12 months	33 (29–37)	24	37 (33–41)	24
KOOS pain
Baseline	40 (35–45)	31	37 (32–43)	27
3 months	64 (57–72)	25	69 (61–77)	22
12 months	75 (67–82)	24	83 (75– 90)	23
EQ-5D
Baseline	0.58 (0.52–0.66)	29	0.62 (0.54–0.70)	26
3 months a	0.72 (0.65–0.79)	24	0.82 (0.78–0.87)	23
12 months	0.78 (0.70–0.86)	24	0.86 (0.81–0.91)	24
PSEQ
Baseline	33 (30–36)	31	34 (31–38)	29
3 months	43 (38–47)	25	47 (43–52)	25
12 months	49 (44–53)	23	52 (48–57)	25
PCS
Baseline	30 (28–32)	31	31 (29–33)	29
3 months	13 (9–17)	25	11 (7–15)	25
12 months	11 (7–16)	23	9 (5–14)	25
6-minute walk test
Baseline	387 (350–424)	31	334 (296–372)	29
3 months	405 (372–438)	24	375 (342–408)	25
12 months	441 (402–480)	24	406 (367–446)	26
Sit to stand
Baseline	10 (9–11)	31	9 (8–10)	29
3 months	11 (9–13)	24	10 (8–11)	25
12 months	12 (11–14)	24	11 (10–13)	26

For abbreviations, see Table 1.

^ap = 0.01