| Weight measured, No. (%) |
1265 (100) |
1133 (93) |
1057 (92) |
966 (90) |
771 (78) |
| Weight measurement missing, No. (%) |
0 |
78 (7) |
85 (8) |
101 (10) |
166 (12) |
| Reasons ineligible for weight assessment, No. |
|
|
|
|
|
| Pregnant at time point |
21 |
10 |
14 |
14 |
10 |
| Died prior to time point |
0 |
4 |
5 |
7 |
12 |
| Data collection ended prior to time point |
0 |
61 |
125 |
198 |
327 |
| Time since initial surgery, median (25th-75th percentile), y |
3.0 (2.1-3.9) |
3.8 (3.1-4.3) |
4.6 (4.0-5.2) |
5.3 (5.0-6.0) |
6.0 (5.8-6.6) |
| Weight Regain Measures, Median (25th-75th Percentile) |
| Weight, kg |
4.5 (2.3-8.2) |
8.2 (5.0-13.2) |
10.4 (5.9-16.3) |
11.8 (7.3-18.6) |
12.7 (7.3-19.5) |
| Body mass indexa
|
1.6 (0.8-2.8) |
3.0 (1.7-4.6) |
3.7 (2.2-5.8) |
4.2 (2.6-6.7) |
4.5 (2.7-6.8) |
| Percentage of presurgery weight |
3.5 (1.7-6.1) |
6.5 (3.8-9.7) |
8.3 (4.8-12.2) |
8.9 (5.7-14.0) |
9.7 (6.0-14.4) |
| Percentage of nadir weight |
5.7 (2.7-9.6) |
10.1 (6.0-16.1) |
12.9 (7.5-19.4) |
14.2 (8.6-22.3) |
15.0 (9.2-23.2) |
| Percentage of maximum weight lost |
9.5 (4.7-17.2) |
17.8 (10.2-27.3) |
22.5 (12.9-34.5) |
24.6 (16.1-39.4) |
26.8 (16.7-41.5) |
|
Clinically Important Weight Regain, No. (%)b
|
| ≥10 kg |
205 (16.2) |
441 (38.9) |
542 (51.3) |
551 (57.0) |
474 (61.5) |
| ≥5 body mass index pointsa
|
95 (7.5) |
235 (20.7) |
354 (33.5) |
379 (39.2) |
336 (43.6) |
| ≥10% of presurgery weight |
100 (7.9) |
267 (23.6) |
392 (37.1) |
420 (43.5) |
376 (48.8) |
| ≥10% of nadir weight |
297 (23.5) |
576 (50.8) |
676 (64.0) |
669 (69.3) |
559 (72.5) |
| ≥15% of nadir weight |
125 (9.9) |
325 (28.7) |
422 (39.9) |
453 (46.9) |
387 (50.2) |
| ≥10% of maximum weight lost |
604 (47.8) |
859 (75.8) |
880 (83.3) |
839 (86.9) |
667 (86.5) |
| ≥20% of maximum weight lost |
235 (18.6) |
492 (43.4) |
599 (56.7) |
612 (63.4) |
519 (67.3) |
| ≥25% of maximum weight lost |
148 (11.7) |
340 (30.0) |
465 (44.0) |
476 (49.3) |
427 (55.4) |
