Table 4.
SF-36 component scores: decompression alone versus decompression and fusion in Toronto Western Hospital patients, and decompression and fusion in Toronto Western Hospital patients versus all sites
| TWH groups; mean ± SD* | Group; mean ± SD* | |||||
|---|---|---|---|---|---|---|
|
|
|
|||||
| Factor | Decompression alone, n = 46 | Decompression and fusion, n = 25 | p value† | TWH decompression and fusion, n = 25 | All sites depression and fusion, n = 108 | p value† |
| Baseline PCS | 28.9 ± 8.0 | 31.2 ± 7.6 | 0.25 | 31.2 ± 7.6 | 29.7 ± 6.9 | 0.39 |
|
| ||||||
| 2 year PCS | 39.0 ± 11.7 | 42.8 ± 9.7 | 0.16 | 42.8 ± 9.7 | 41.1 ± 10.8 | 0.45 |
|
| ||||||
| Change in PCS | 10.4 ± 10.8 | 12.1 ± 9.4 | 0.51 | 12.1 ± 9.4 | 11.2 ± 10.4 | 0.69 |
|
| ||||||
| PCS MCID,‡ % | 65 | 76 | 76 | 70 | ||
|
| ||||||
| PCS SCB,§ % | 61 | 72 | 72 | 63 | ||
|
| ||||||
| Baseline PF | 24.8 ± 20.6 | 31.1 ± 23.7 | 0.27 | 31.1 ± 23.7 | 30.3 ± 21.8 | 0.87 |
|
| ||||||
| 2-year PF | 52.2 ± 30.7 | 62.2 ± 25.0 | 0.14 | 62.2 ± 25.0 | 60.5 ± 27.9 | 0.77 |
|
| ||||||
| Change in PF | 27.3 ± 31.2 | 31.1 ± 24.7 | 0.58 | 31.1 ± 24.7 | 30.2 ± 27.7 | 0.88 |
|
| ||||||
| Baseline BP | 26.2 ± 19.5 | 30.3 ± 18.4 | 0.38 | 30.3 ± 18.4 | 26.9 ± 13.6 | 0.39 |
|
| ||||||
| 2-year BP | 57.3 ± 25.2 | 59.2 ± 20.7 | 0.73 | 59.2 ± 20.7 | 55.7 ± 24.6 | 0.46 |
|
| ||||||
| Change in BP | 32.8 ± 23.6 | 29.0 ± 25.4 | 0.54 | 29.0 ± 25.4 | 28.4 ± 27.5 | 0.93 |
BP = bodily pain; MCID = minimal clinically important difference; PCS = physical component summary; PF = physical functioning; SCB = substantial clinical benefit; SD = standard deviation; TWH = Toronto Western Hospital.
*
Unless otherwise indicated.
†
Two-sample Student t test.
‡
MCID for PCS = 4.9.
§
SCB for PCS = 6.2.