Table 3.
Hierarchical Regression of Factors Associated with Perception of Body Weight
| Predictor | Β (coefficient for the constant) | SE β | Wald’s χ2 | df | p (Significance) | eβ (Odds ratio) | 95% C.I.for EXP(B) | |
|---|---|---|---|---|---|---|---|---|
| Lower | Upper | |||||||
| RBANS: total score | −0.015 | 0.010 | 02.110 | 1 | > 0.05 | 0.985 | 0.966 | 1.005 |
| BCIS: self-certainty total score | 0.163 | 0.062 | 6.944 | 1 | ≤0. 01** | 1.177 | 1.043 | 1.328 |
| BMI | −0.366 | 0.068 | 29.172 | 1 | ≤0.001** | 0.694 | 0.607 | 0.792 |
| Weight changes | 14.725 | 2 | ≤0.001** | |||||
| Weight changes (1) | 1.205 | 0.684 | 3.102 | 1 | > 0.05 | 3.338 | 0.873 | 12.761 |
| Weight changes (2) | −1.633 | 0.534 | 9.360 | 1 | ≤0. 01** | 0.195 | 0.069 | 0.556 |
| Overweight blood relatives | −0.482 | 0.423 | 1.299 | 1 | > 0.05 | 0.617 | 0.269 | 1.415 |
| Maintain a healthy body weight or lose weight | 0.985 | 0.460 | 4.591 | 1 | ≤0.05* | 2.678 | 1.088 | 6.591 |
| Age | 0.006 | 0.016 | 0.124 | 1 | > 0.05 | 1.006 | 0.974 | 1.038 |
| HLOE | 3.552 | 2 | > 0.05 | |||||
| HLOE (1) | −0.874 | 0.684 | 1.630 | 1 | > 0.05 | 0.417 | 0.109 | 1.596 |
| HLOE (2) | −1.517 | 0.816 | 3.455 | 1 | > 0.05 | 0.219 | 0.044 | 1.086 |
| Constant | 12.747 | 3.385 | 14.179 | 1 | ≤0.001** | 343,400.256 | ||
BCIS: Beck Cognitive Insight Scale, BMI: Body mass index, HLOE: Highest level of education; RBANS: Repeatable Battery for the Assessment of Neuropsychological Status
HLOE Reference category = 0 = Primary school or less, 1 = Some secondary school, 2 = Completed secondary school
Weight changes: Reference category = 0 = No significant weight changes, 1 = Weight decreased, 2 = Weight increased
*: relationship with correct perception of body weight - p ≤ 0. 05
**: relationship with correct perception of body weight - p ≤ 0.01
Note: Supplementary Table 1 compares these results to regression results when those who misperceived their weight to be higher were included in the analysis