Identification of subgroup effect with an individual participant data meta-analysis of randomised controlled trials of three different types of therapist-delivered care in low back pain

Table 3 Thresholds for selected sizes of the subgroup for the short-term FFbHR outcome as seen in Additional file 1: Appendix 8, figure (a)

Subgroup size	Age (<)	FFbHR (<) (0 to 100; 100 = best)	SF-12/36 PCS (<) (0 to 100; 100 = best)	SF-12/36 MCS (<) (0 to 100; 100 = best)	Treatment effect
0.001	37	29.17	33.62	28.93	91.29
0.102	91	29.17	67.75	56.82	16.79
0.200	54	54.17	43.62	72.11	13.74
0.308	62	54.17	67.75	72.11	12.72
0.400	62	70.83	40.45	60.35	11.32
0.509	67	62.50	67.75	72.11	10.36
0.602	91	75.00	40.45	60.35	9.96
0.702	91	75.00	47.59	60.35	9.14
0.808	91	100.00	47.59	60.35	8.59
0.906	91	100.00	47.59	72.11	8.47

Adapted with permission from: Patel S, Hee SW, Mistry D, Jordan J, Brown S, Dritsaki M, Ellard DR, Friede T, Lamb SE, Lord J, Madan J, Morris T, Stallard N, Tysall C, Willis A, Underwood M, the Repository G. Programme Grants for Applied Research. Identifying back pain subgroups: developing and applying approaches using individual patient data collected within clinical trials. Southampton (UK): NIHR Journals Library

ISSN: 1471-2474