Table 7.
Multivariate logistic regression models on the association between objective measures of disease status as criterion (dependent) variables and the selected items of the Brief Illness Perception Questionnaire (Brief IPQ) as explanatory variables*
| Criterion variable | Predictor variable | P† | Estimated odds ratio | 95% CI for odds ratios |
|---|---|---|---|---|
| BMI (kg/m2) |
Identity |
0.785 |
1.019 |
0.888-1.171 |
| Concern |
<0.001 |
1.230 |
1.098-1.377 |
|
| Emotional response |
0.447 |
1.046 |
0.931-1.176 |
|
| HbA1c (%) |
Personal control |
0.119 |
1.065 |
0.984-1.152 |
| Concern |
0.169 |
1.080 |
0.968-1.204 |
|
| Emotional response |
0.263 |
1.062 |
0.956-1.180 |
|
| Fasting blood glucose (mmol/L) |
Personal control |
<0.001 |
1.308 |
1.154-1.483 |
| Concern |
0.048 |
1.146 |
1.001-1.313 |
|
| Total cholesterol (mmol/L) |
Personal control |
0.519 |
1.123 |
0.789-1.599 |
| Treatment control |
0.009 |
1.554 |
1.116-2.165 |
|
| LDLC (mmol/L) |
Timeline |
0.332 |
1.049 |
0.952-1.155 |
| Personal control |
0.796 |
1.019 |
0.883-1.176 |
|
| Treatment control |
0.179 |
1.097 |
0.958-1.256 |
|
| Understanding |
0.572 |
0.967 |
0.861-1.086 |
|
| Blood pressure (mm Hg) | Personal control |
0.886 |
1.007 |
0.911-1.114 |
| Understanding | 0.010 | 1.147 | 1.033-1.274 |
*Abbreviations: BMI − body mass index; HbA1c − glycated hemoglobin; LDLC − low-density lipoprotein cholesterol.
†Multivariate regression.