Table 4.
Between-group changes in pressure pain threshold for responder vs non-responders following SMT
| Time | Improvement | ODI | NRS | ||
|---|---|---|---|---|---|
| Pain | Stiff | Pain | Stiff | ||
| Baseline | 50% | 96(−70:262) | −42(− 232:148) | 75(− 124:275) | 13(− 195:222) |
| 30% | 56(− 96:209) | −71(− 232:91) | 33(− 136:203) | 17(− 143:176) | |
| 0% | −37(− 226:152) | − 84(− 275:108) | − 39(− 217:140) | −75(− 255:105) | |
| Post-SMT | 50% | 15(− 92:122) | 74(− 56:204) | 96(− 32:225) | 79(− 57:215) |
| 30% | 6(−92:105) | 115 (10:220)* | 69(−41:180) | 11(−98:119) | |
| 0% | −43(− 172:86) | 108(−4:219) | 61(−54:176) | 32(− 86:150) | |
| Follow-up | 50% | 73(−39:184) | 54(−73:181) | 147 (14:281)* | 51(−86:187) |
| 30% | 26(−74:126) | 119 (12:226)* | 121 (5:237)* | 8(− 101:117) | |
| 0% | −16(−142:110) | 98(−17:213) | 59(−60:177) | 74(−43:191) | |
Between-group mean differences (responder vs non-responder) in pressure pain threshold (kPa) at varying thresholds for improvement in disability and patient-reported low back pain (0, 30, 50%) in groups randomized to SMT at the stiffest (‘stiff’) or most pain sensitive (‘pain’) segment (columns). Estimates are presented as between-group differences, 95% confidence interval, and “*” indicates a p-value < 0.05. ODI Oswestry disability index, NRS patient-reported low back pain