Table 4.
Results of Sensitivity Analyses Examining Change in Weight (lbs.) at 12-Month Follow-up
| Sensitivity analysis for 12-month weight outcome | SDM patients N = 351 | Usual care patients N = 1028 | Difference (lbs.) | P value |
|---|---|---|---|---|
| Adjust for gender, A1c, and weight loss med use (CI) |
− 5.3 lbs. (− 6.5, − 4.1) |
− 0.2 lbs. (− 0.9, 0.5) |
− 5.1 lbs. (− 6.5, − 3.7) |
< .001 |
| Imputation for missing 12-month follow-up weight assessments |
− 4.6 lbs. (− 6.0, − 3.2) |
− 0.2 lbs. (− 0.9, 0.5) |
− 4.4 lbs. (− 5.9, − 2.8) |
< .001 |
| Main model with age interaction term (CI) |
− 5.2 lbs. (− 6.5, − 4.0) |
− 0.2 lbs. (− 0.9, 0.5) |
− 5.0 lbs. (− 6.5, − 3.6) |
< .001 |
| Main model with BMI interaction term (CI) |
− 6.3 lbs. (− 7.9, − 4.8) |
− 0.6 lbs. (− 1.5, 0.4) |
− 5.8 lbs. (− 7.6, − 4.0) |
< .001 |
| Main model with HbA1c interaction term (CI) |
− 5.3 lbs. (− 6.5, − 4.1) |
− 0.2 lbs. (− 0.9, 0.5) |
− 5.1 lbs. (− 6.5, − 3.7) |
< .001 |
| Removal of outliers* (CI) |
− 4.3 lbs. (− 5.2, − 3.4) |
0.0 lbs. (− 0.5, 0.6) |
− 4.3 lbs. (− 5.4, − 3.2) |
< .001 |
lbs. pounds, SDM shared decision-making, CI confidence interval, BMI body mass index
*Outlier sensitivity analysis = removal of 2.5% top and 2.5% bottom outliers in weight change values