Table 8.

Mean pre-treatment outcomes for completers versus drop-outs.

Measure	Completers mean pre-treatment score	Drop-outs mean pre-treatment score	Independent t-test
Age	45.72 (20–77)	48.46 (23–70)	F = 0.867, t = −1.394, df = 170, p = .353 ns
Self-compassion (SCS)	11.63	10.85	F = 0.480, t = 1.187, df = 171, p = .489 ns
Depression (CES-D)	30.68	32.10	F = 0.370, t = −0.777, df = 171, p = .544 ns
Pain anxiety (PASS)	50.52	49.92	F = 0.753, t=0.188, df = 171, p = .387 ns
Pain disability (RMDQ):	14.14	15.15	F = 0.238, t = −1.139, df = 171, p = .627 ns
Pain self-efficacy (PSEQ)	25.78	24.46	F = 0.358, t = 0.769, df = 171, p = .550 ns
Pain numeric rating scale	4.97	5.88	F = 0.000, t=−2.776, df = 171, p = .991 ns
Self-kindness (SK)	4.45	3.95	F = 7.533, t = 1.639, df = 171, p < .007