Table 5.
Completers’ Weight Change Categorized as a Percentage of Initial Weight
| Duration of follow-up (total renewing) | Weight category | Males %(n) | Females % (n) | p-valuea |
|---|---|---|---|---|
| Year 1 (74,629) | ≥ 10% weight loss | 25.9 (1,331) | 24.5 (17,002) | 0.35 |
| 5% to <10% weight loss | 24.9 (1,282) | 25.6 (17,816) | ||
| 0 to <5% weight loss | 31.7 (1,627) | 32.1 (22,302) | ||
|
| ||||
| >0 to 5% weight gain | 13.8 (710) | 14.0 (9,714) | ||
| 5% to <10% weight gain | 2.7 (140) | 2.9 (1,988) | ||
| ≥10% weight gain | 1.0 (50) | 1.0 (667) | ||
|
| ||||
| Year 2 (41,080) | ≥10% weight loss | 30.0 (853) | 29.6 (11,335) | 0.83 |
| 5% to <10% weight loss | 24.3 (691) | 24.8 (9,483) | ||
| 0 to <5% weight loss | 27.1 (770) | 27.7 (10,589) | ||
|
| ||||
| >0 to 5% weight gain | 13.4 (382) | 12.9 (4,949) | ||
| 5% to <10% weight gain | 3.8 (109) | 3.5 (1,336) | ||
| ≥10% weight gain | 1.4 (39) | 1.4 (544) | ||
|
| ||||
| Year 3 (25,077) | ≥10% weight loss | 33.4 (567) | 31.7 (7,414) | 0.08 |
| 5% to <10% weight loss | 23.0 (390) | 24.3 (5,687) | ||
| 0 to <5% weight loss | 24.4 (414) | 25.3 (5,922) | ||
|
| ||||
| >0 to 5% weight gain | 11.8 (201) | 12.7 (2,970) | ||
| 5% to <10% weight gain | 4.9 (84) | 4.1 (962) | ||
| ≥10% weight gain | 2.4 (41) | 1.8 (425) | ||
|
| ||||
| Year 4 (15,571) | ≥10% weight loss | 34.8 (356) | 33.5 (4,874) | 0.05 |
| 5% to <10% weight loss | 24.2 (247) | 24.0 (3,494) | ||
| 0 to <5% weight loss | 21.7 (222) | 23.7 (3,449) | ||
|
| ||||
| >0 to 5% weight gain | 10.6 (108) | 12.1 (1,766) | ||
| 5% to <10% weight gain | 5.6 (57) | 4.5 (661) | ||
| ≥10% weight gain | 3.1 (32) | 2.1 (305) | ||
|
| ||||
| Year 5 (9,501) | ≥10% weight loss | 37.9 (245) | 36.1 (3,199) | 0.35 |
| 5% to <10% weight loss | 20.6 (133) | 23.4 (2,072) | ||
| 0 to <5% weight loss | 22.4 (145) | 22.4 (1,980) | ||
|
| ||||
| >0 to 5% weight gain | 10.5 (68) | 11.3 (1,003) | ||
| 5% to <10% weight gain | 5.6 (36) | 4.5 (401) | ||
| ≥10% weight gain | 2.9 (19) | 2.3 (200) | ||
|
| ||||
| Year 6 (5,347) | ≥10% weight loss | 36.0 (131) | 39.2 (1,951) | 0.22 |
| 5% to <10% weight loss | 23.4 (85) | 22.2 (1,106) | ||
| 0 to <5% weight loss | 19.8 (72) | 20.5 (1,021) | ||
|
| ||||
| >0 to 5% weight gain | 10.4 (38) | 11.2 (556) | ||
| 5% to <10% weight gain | 6.3 (23) | 4.4 (220) | ||
| ≥10% weight gain | 4.1 (15) | 2.6 (129) | ||
|
| ||||
| Year 7 (2,289) | ≥10% weight loss | 35.4 (51) | 40.4 (867) | 0.65 |
| 5% to <10% weight loss | 24.3 (35) | 21.7 (465) | ||
| 0 to <5% weight loss | 18.8 (27) | 19.9 (427) | ||
|
| ||||
| >0 to 5% weight gain | 13.2 (19) | 10.8 (231) | ||
| 5% to <10% weight gain | 6.3 (9) | 4.4 (95) | ||
| ≥10% weight gain | 2.1 (3) | 2.8 (60) | ||
a
Chi-square test of proportions between males and females, by follow-up year.