Table 4.
Results of Linear Mixed-Effects Models for Primary Outcomes (MRI T2* and Graft Volume) a
| BTB Autograft: T2* | BTB Autograft: Volume | HS Autograft: T2* | HS Autograft: Volume | |||||
|---|---|---|---|---|---|---|---|---|
| Estimate (95% CI) |
P | Estimate (95% CI) |
P | Estimate (95% CI) |
P | Estimate (95% CI) |
P | |
| (Intercept) | 9.90 (8.99 to 10.82) |
<.001 | 2209.1 (1684.5 to 2733.6) |
<.001 | 10.63 (9.54 to 11.73) |
<.001 | 3187.13 (2636.1 to 3738.2) |
<.001 |
| Time: 6 mo | 0.52 (−0.05 to 1.09) |
.074 | 217.8 (14.7 to 421.0) |
.036 | 0.59 (−0.16 to 1.33) |
.119 | 118.49 (−223.3 to 460.2) |
.489 |
| Time: 9 mo | 0.77 (0.13 to 1.40) |
.019 | 144.5 (−150 to 439.1) |
.328 | 0.61 (−0.35 to 1.57) |
.205 | 39.16 (−194.7 to 273) |
.738 |
| Time: 12 mo | 0.62 (0.01 to 1.22) |
.046 | 308.1 (−35.9 to 652.1) |
.078 | 0.52 (−0.30 to 1.34) |
.207 | 1.19 (−462.5 to 464.9) |
.996 |
| Group: intervention | −0.63 (−1.89 to 0.63) |
.309 | 135.1 (−606 to 876.1) |
.706 | −0.89 (−2.17 to 0.39) |
.162 | −395.81 (−11,141.1 to 351.5) |
.280 |
a
BTB autograft: 20 patients, 69 MRIs; HS autograft: 20 patients, 72 MRIs. Bold P values indicate statistical significance (P < .05). BTB, bone–patellar tendon–bone; HS, hamstring; MRI, magnetic resonance imaging.