Table 3.
Weight Change of Members With Consecutive Annual Renewal
| Average cumulative weight change at renewal, kg, mean (95% CI)*;** | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| Renewal period | N | Starting Weight, kg Mean (95% CI) | YEAR 1 | YEAR 2 | YEAR 3 | YEAR 4 | YEAR 5 | YEAR 6 | YEAR 7 |
| No renewal | |||||||||
| Females | 124,837 | 98.2 (98.0, 98.3) | |||||||
| Males | 8,003 | 121.9 (121.3, 122.5) | |||||||
|
| |||||||||
| 1 year | |||||||||
| Females | 69,489 | 97.9 (97.7, 98.0) | −5.9 (−6.0, −5.9) | ||||||
| Males | 5,140 | 119.2 (118.4, 119.9) | −7.8 (−8.0, −7.5) | ||||||
|
| |||||||||
| 2 years | |||||||||
| Females | 38,236 | 97.4 (97.2, 97.6) | −6.6 (−6.7, −6.5) | −6.7 (−6.8, −6.6) | |||||
| Males | 2,844 | 118.9 (117.9, 119.8) | −8.8 (−9.2, −8.4) | −8.8 (−9.3, −8.3) | |||||
|
| |||||||||
| 3 years | |||||||||
| Females | 23,380 | 97.0 (96.7, 97.3) | −6.7 (−6.8, −6.6) | −7.1 (−7.2, −6.9) | −6.9 (−7.0, −6.8) | ||||
| Males | 1,697 | 118.3 (117.1, 119.5) | −9.0 (−9.5, −8.5) | −9.1 (−9.8, −8.5) | −8.8 (−9.5, −8.2) | ||||
|
| |||||||||
| 4 years | |||||||||
| Females | 14,549 | 96.6 (96.3, 96.9) | −6.8 (−7.0, −6.7) | −7.2 (−7.4, −7.1) | −7.1 (−7.3, −7.0) | −7.1 (−7.3, −6.9) | |||
| Males | 1,022 | 117.7 (116.1, 119.3) | −9.1 (−9.7, −8.4) | −9.2 (−10.0, −8.5) | −9.1 (−9.9, −8.3) | −9.0 (−9.8, −8.2) | |||
|
| |||||||||
| 5 years | |||||||||
| Females | 8,855 | 96.5 (96.1, 96.9) | −7.0 (−7.2, −6.8) | −7.4 (−7.6, −7.2) | −7.3 (−7.5, −7.1) | −7.3 (−7.5, −7.1) | −7.4 (−7.6, −7.2) | ||
| Males | 646 | 116.3 (114.4, 118.3) | −8.9 (−9.8, −8.1) | −9.4 (−10.4, −8.4) | −9.3 (−10.3, −8.3) | −9.2 (−10.2, −8.1) | −9.2 (−10.3, −8.1) | ||
|
| |||||||||
| 6 years | |||||||||
| Females | 4,983 | 96.2 (95.6, 96.7) | −7.0 (−7.3, −6.8) | −7.5 (−7.8, −7.3) | −7.4 (−7.6, −7.1) | −7.3 (−7.6, −7.0) | −7.5 (−7.8, −7.3) | −7.9 (−8.2, −7.6) | |
| Males | 364 | 118.3 (115.5, 121.0) | −9.0 (−10.1, −7.8) | −9.6 (−11.0, −8.2) | −9.6 (−11.1, −8.2) | −8.9 (−10.4, −7.4) | −9.0 (−10.5, −7.4) | −8.7 (−10.2, −7.2) | |
|
| |||||||||
| 7 years | |||||||||
| Females | 2,145 | 96.3 (95.5, 97.1) | −7.0 (−7.4, −6.7) | −7.4 (−7.8, −7.0) | −7.3 (−7.6, −6.9) | −7.2 (−7.6, −6.8) | −7.4 (−7.8, −6.9) | −7.8 (−8.2, −7.3) | −8.2 (−8.6, −7.7) |
| Males | 144 | 116.7 (112.4, 120.9) | −9.1 (−11.1, −7.1) | −9.6 (−11.8, −7.3) | −9.6 (−12.0, −7.2) | −9.0 (−11.4, −6.6) | −9.6 (−12.4, −6.9) | −9.5 (−12.3, −6.7) | −9.6 (−12.2, −7.1) |
*
p-values <0.001 for difference between cumulative weight change and starting weight.
**
There was no statistically significant difference between the weight change at year one and subsequent years of follow up, except for years 6 and 7 for females (p=0.001 and p<0.001, respectively).