Table 4. Change in pain, Oswestry Disability Index, SF-36, and EQ-5D.
| Measure | Baseline | 1 mo | 3 mo | 6 mo | 12 mo | p Valuea |
|---|---|---|---|---|---|---|
| VAS SI joint pain (SD) VAS SI joint pain change (SD) |
79.8 (12.8) | 36.9 (26.3) −42.7 (28.5) |
30.7 (25.9) −49.2 (25.6) |
30.0 (26.5) −49.9 (28.3) |
30.4 (27.6) −49.1 (29.5) |
<0.0001 |
| ODI ODI change (SD) |
55.2 (11.5) | 42.6 (17.4) −12.5 (19.2) |
33.8 (18.8) −21.3 (19.2) |
32.5 (19.7) −22.7 (20.6) |
31.4 (19.2) −23.9 (20.4) |
<0.0001 |
| EQ-5D TTO index TTO change Health thermometer Health thermometer change |
0.43 (0.18) 57.1 (23.7) |
– – |
– – |
0.69 (0.21) 0.25 (0.24) 69.1 (20.2) 12.1 (27.1) |
0.71 (0.20) 0.27 (0.24) 68.8 (20.7) 11.4 (27.9) |
<0.0001 <0.0001 |
| SF-36 PCS PCS change MCS MCS change |
31.7 (5.6) 38.5 (11.3) |
– – |
– – |
40.2 (9.7) 8.4 (9.7) 47.8 (11.5) 9.4 (12.6) |
40.3 (9.5) 8.7 (9.9) 48.0 (12.4) 9.2 (11.7) |
<0.0001 <0.0001 |
| Satisfaction (%) Somewhat or very satisfied Might or definitely would have implant again |
– – |
– – |
– – |
157 (93.5%) 155 (92.3%) |
137 (87.3%) 143 (91.1%) |
– – |
Abbreviations: EQ-5D, EuroQOL-5D; MCS, mental component summary; ODI, Oswestry Disability Index; PCS, physical component summary; RF, radiofrequency; SD, standard deviation; SF-36, Short Form-36; SI, sacroiliac; TTO, time trade-off; VAS, visual analog scale.
Note: The top row shows group mean and the bottom row shows change from baseline.
a
Repeated measures analysis of variance. A dash indicates assessment not required per protocol.