Table 2.
Measures of Affective Distress and Stress for TMD Cases and Controls
| Putative risk factor | Units and potential range | Controls | TMD cases | P-value1 | Non-imputed effect estimates2 |
Imputed effect estimates
|
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Site-adjusted effect3 | Fully adjusted effect4 | Fully adjusted effect | |||||||||||||
| n | mean | se | n | mean | se | SOR5 | 95% CI6 | SOR | 95%CI | n | SOR | 95%CI | |||
| State Anxiety Inventory | (20–80 scale) | 1598 | 30.90 | 0.24 | 181 | 32.69 | 0.73 | 0.0162 | 1.2 | 1.1, 1.4 | 1.3 | 1.1, 1.5 | 1809 | 1.3 | 1.1, 1.5 |
| Trait Anxiety Inventory | (20–80 scale) | 1585 | 35.50 | 0.24 | 180 | 38.59 | 0.81 | <0.0001 | 1.4 | 1.2, 1.7 | 1.5 | 1.3, 1.7 | 1812 | 1.5 | 1.3, 1.7 |
| POMS-Bi Positive Affect | (30–120 scale) | 1547 | 87.18 | 0.4 | 178 | 82.62 | 1.23 | 0.0002 | 0.7 | 0.6,0.8 | 0.7 | 0.6, 0.8 | 1809 | 0.7 | 0.6, 0.8 |
| POMS-Bi Negative Affect | (30–120 scale) | 1565 | 49.47 | 0.4 | 180 | 56.34 | 1.29 | <0.0001 | 1.5 | 1.3, 1.7 | 1.5 | 1.3, 1.7 | 1809 | 1.4 | 1.2, 1.7 |
| Perceived Stress Scale | (0–40 scale) | 1603 | 14.66 | 0.16 | 183 | 16.81 | 0.51 | <0.0001 | 1.4 | 1.2, 1.7 | 1.5 | 1.3, 1.8 | 1807 | 1.5 | 1.3, 1.8 |
P-values are from analysis variance model comparing mean values of putative risk factor between cases and controls, with adjustment for study site.
Non-imputed effect estimates are for complete case analysis using numbers of subjects in columns headed n.
Site-adjusted effects were computed in logistic regression models where the putative risk factor as the main explanatory variable and study site as covariate.
Fully-adjusted effects were computed in logistic regression models that additionally include covariates of age group, gender and race/ethnicity.
SOR is standardized odds ratio from a logistic regression model evaluating the linear effect of the risk factor that was standardized by z-score transformation
95% confidence interval for SOR