Table 2.
Changes in primary outcome measures during the follow-up period for the two study groups
| Preoperatively (mean (SD)) | First month (mean (SD)) | 3 months (mean (SD)) | 6 months (mean (SD)) | 12 months (mean (SD)) | Change 1 (mean (SD)) | Change 2 (mean (SD)) | P value** | P value*** | P value**** | |
|---|---|---|---|---|---|---|---|---|---|---|
| Barthel | ||||||||||
| AMBI | 91.9 (12.1) | 52.6 (20.5) | 70.7 (19.4) | 77.9 (19.3) | 81.1 (18) | 28.5 (17.5) | −10.8 (13.9) | <0.001 | <0.001 | 0.037 |
| G3 | 92.6 (14.1) | 59.6 (22.6) | 73.6 (22.2) | 82.9 (17.4) | 89.7 (15.8) | 30.1 (14.4) | −2.9 (8.3) | <0.001 | 0.043 | |
| P value* | 0.803 | 0.176 | 0.560 | 0.250 | 0.036 | |||||
| EQ-5D | ||||||||||
| AMBI | 0.90 (0.14) | 0.59 (0.26) | 0.72 (0.24) | 0.75 (0.25) | 0.78 (0.27) | 0.19 (0.19) | −0.12 (0.21) | <0.001 | 0.001 | 0.012 |
| G3 | 0.92 (0.14) | 0.66 (0.24) | 0.76 (0.21) | 0.83 (0.19) | 0.90 (0.16) | 0.25 (0.13) | −0.02 (0.06) | <0.001 | 0.172 | |
| P value* | 0.586 | 0.232 | 0.438 | 0.176 | 0.018 | |||||
| Parker | ||||||||||
| AMBI | 7.8 (2.1) | 2.1 (1.4) | 3.8 (1.9) | 4.9 (2.2) | 5.7 (2.2) | 3.7 (1.7) | −2.1 (1.6) | <0.001 | 0.001 | 0.011 |
| G3 | 7.5 (2.4) | 2.8 (1.5) | 4.6 (2.1) | 5.7 (2.1) | 6.5 (2.3) | 3.7 (1.4) | −1.0 (1.3) | <0.001 | 0.001 | |
| P value* | 0.644 | 0.061 | 0.095 | 0.146 | 0.305 | |||||
AMBI sliding screw, G3 gamma nail, SD standard deviation, Change 1 mean change from first month to 12 months, Change 2 mean change from baseline to 12 months
*p value for group effect, ** pvalue for change from first month to 12 months, *** p value for change from baseline to 12 months, **** effects reported include differences between the two groups in the degree of change in each particular variable (repeated measurements analysis of variance)