Table 2. PCS and PHS means, CIs, Hochberg adjusted significance values and Cohen's d effect sizes for patients in intervention compared to usual care across the four assessment points.

	Intervention	Usual care	Difference (95% CI)	Adj P value	Effect size (d)
PCS (SF-12)
Baseline	49.03 (48.02 to 50.03)	49.33 (48.32 to 50.34)	0.30 (−1.12 to 1.73)	.911	.026
6 months	47.82 (46.80 to 48.85)	47.23 (46.19 to 48.27)	−0.59 (−2.05 to .87)	.911	.051
12 months	47.74 (46.69 to 48.79)	47.82 (46.79 to 48.88)	0.08 (−1.41 to 1.58)	.911	.007
18 months	48.24 (47.18 to 49.29)	47.35 (46.29 to 48.41)	−0.89 (−2.38 to .61)	.911	.077
PHS (SF-12)
Baseline	42.45 (41.59 to 43.32)	42.64 (41.78 to 43.51)	0.19 (−1.03 to 1.42)	.911	.019
6 months	45.85 (44.95 to 46.75)	43.78 (42.87 to 44.69)	−2.06 (−3.35 to −.78)	.029	.206
12 months	46.37 (45.44 to 47.31)	44.33 (43.39 to 45.27)	−2.05 (−3.37 to −.72)	.036	.200
18 months	46.87 (45.93 to 47.80)	44.75 (43.80 to 45.70)	−2.12 (−3.45 to −.78)	.030	.209