Table 3.
Adjusted odds ratios (99% CIs) of self-described weight or attempted weight management and mis-estimation of BMI and discordance between self-reported and measured BMI categories
| BMISR Under-Estimated by < -1.40 kg/m2 | BMISR Category < BMIM Category | |||
|---|---|---|---|---|
| Model 1^ | Model 2^^ | Model 1^ | Model 2^^ | |
| Self-described weight § | ||||
| About the right weight | 1.00 | 1.00 | 1.00 | 1.00 |
| Too heavy | 1.63 (1.24 to 2.14)*** | 0.46 (0.32 to 0.67)*** | 1.78 (1.33 to 2.39)*** | 0.21 (0.13 to 0.33)*** |
| Too light | 0.78 (0.38 to 1.61) | 1.93 (0.87 to 4.28)T | 0.91 (0.40 to 2.12) | 22.3 (5.33 to 93.1)*** |
| Not sure | 1.51 (0.70 to 3.27) | 0.89 (0.34 to 1.89) | 1.68 (0.75 to 3.78) | 0.53 (0.20 to 1.45) |
| Attempting to manage weight | ||||
| No | 1.00 | 1.00 | 1.00 | 1.00 |
| Lose weight | 1.45 (1.09 to 1.93)*** | 0.59 (0.42 to 0.84)*** | 1.33 (0.97 to 1.81)T | 0.28 (0.18 to 0.42)*** |
| Maintain weight | 0.97 (0.67 to 1.42) | 0.91 (0.61 to 1.36) | 0.90 (0.49 to 1.37) | 0.82 (0.50 to 1.36) |
| Gain weight | 1.18 (0.31 to 4.51) | 2.24 (0.57 to 8.86) | 0.98 (0.21 to 4.63) | 6.88 (0.84 to 56.5)T |
| BMISR Over-Estimated by > 1.40 kg/m2 | BMISR Category > BMIM Category | |||
| Model 1^ | Model 2^^ | Model 1^ | Model 2^^ | |
| Self-described weight § | ||||
| About the right weight | 1.00 | 1.00 | 1.00 | 1.00 |
| Too heavy | 1.44 (0.76 to 2.72) | 2.54 (1.10 to 4.82)** | 1.49 (0.74 to 3.01) | 3.87 (1.45 to 10.1)*** |
| Too light | 0.81 (0.16 to 4.13) | 0.57 (0.10 to 3.39) | 1.41 (0.27 to 7.27) | 0.43 (0.06 to 3.33) |
| Not sure | 3.02 (0.86 to 10.5)T | 3.88 (1.06 to 14.1)** | 2.15 (0.47 to 9.72) | 3.37 (0.70 to 16.3)T |
| Attempting to manage weight | ||||
| No | 1.00 | 1.00 | 1.00 | 1.00 |
| Lose weight | 1.43 (0.74 to 2.78) | 1.99 (0.92 to 4.31)T | 1.98 (0.97 to 4.03)T | 4.48 (1.85 to 10.8)*** |
| Maintain weight | 0.99 (0.41 to 2.41) | 1.02 (0.43 to 2.51) | 0.77 (0.23 to 2.52) | 1.01 (0.30 to 3.40) |
| Gain weight | - | - | 1.93 (0.12 to 32.0) | 1.94 (0.11 to 32.8) |
All values reported above are adjusted OR (99% CI).
BMISR, BMI based on self-reported weight and height; BMIM, BMI based on measured weight and height.
§ Self-described weight taking into account age and height.
^ Model 1: Multivariate logistic regression with adjustment for sex, age, ethnicity, current smoking status, alcohol consumption, physical acitvity level, level of education, and marital status.
^^ Model 2: Same as previous model but with BMI category as an additional covariate
T P < 0.05, ** P < 0.01, *** P < 0.001.