Table 2.
Weight history, current weight, and current weight goals of NWCR participants, by cluster assignment
| Cluster 1, N = 1,125 | Cluster 2, N = 599 | Cluster 3, N = 283 | Cluster 4, N = 221 | P value | |
|---|---|---|---|---|---|
| Current BMI (kg/m2) | 23.4 | 28.6 | 23.3 | 26.1 | <0.0001 |
| BMI category (%) | |||||
| Normal weight, <25.0kg/m2 | 76.3 | 27.2 | 78.7 | 50.9 | |
| Overweight, 25.0–29.9 kg/m2 | 20.5 | 41.9 | 18.8 | 32.3 | |
| Obese, ≥30.0kg/m2 | 3.2 | 30.9 | 2.5 | 16.8 | <0.0001 |
| Maximum BMI (kg/m2) | 33.5 | 44.7 | 32.0 | 37.3 | <0.0001 |
| Maximum-current weight (lbs) | 62.4 | 100.5 | 56.0 | 70.4 | <0.0001 |
| Duration of weight maintenance (months)a | 69.7 | 55.8 | 133.5 | 75.7 | <0.0001 |
| Tried to lose weight previously (%) | 100.0 | 98.3 | 5.2 | 93.8 | <0.0001 |
| Lost weight on own (%)b | 56.1 | 38.0 | 73.2 | 43.1 | <0.0001 |
| Weight loss methodsc | |||||
| Exercise classes | 30.1 | 37.7 | 21.7 | 6.5 | <0.0001 |
| Book/magazine diet | 21.6 | 24.1 | 17.9 | 23.0 | 0.23 |
| Prescription or diet pills | 7.3 | 17.8 | 3.2 | 8.2 | <0.0001 |
| Surgical procedure | 1.2 | 9.7 | 0.0 | 5.2 | <0.0001 |
| Hypnosis | 1.2 | 1.9 | 0.0 | 0.9 | 0.58 |
| Weight pattern during past year (%) | |||||
| Gained weight | 3.5 | 12.0 | 4.6 | 5.5 | |
| Lost weight | 15.2 | 25.5 | 14.1 | 22.0 | |
| Stable ± 5 lb | 77.2 | 38.9 | 79.0 | 63.4 | |
| Gained and lost weight | 4.1 | 23.6 | 2.3 | 9.1 | <0.0001 |
| Current weight goal (%) | |||||
| Maintain weight | 54.9 | 15.6 | 64.4 | 48.4 | |
| Lose weight | 44.4 | 84.1 | 35.2 | 51.6 | |
| Gain weight | 0.7 | 0.3 | 0.4 | 0.00 | <0.0001 |
| Current weight loss/maintenance methodsd | |||||
| Commercial program | 30.0 | 45.0 | 17.0 | 34.5 | <0.0001 |
| Diet/exercise books/magazines | 75.5 | 79.0 | 61.2 | 53.4 | <0.0001 |
| Prescription diet drugs | 0.7 | 2.1 | 0.4 | 0.5 | 0.06 |
BMI, body mass index; NWCR, National Weight Control Registry.
a
Duration of time since participant lost at least 30 lbs from maximum (months).
b
Lost weight on own without specific program or health professional (%).
c
In achieving this most recent successful weight loss, you may have used several different approaches. Please indicate which of the following strategies you used to lose weight (select all that apply).
d
Please indicate whether or not you have used this strategy to maintain or lose weight during the past year (select all that apply).