Model 1: Multivariate logistic regression models exploring factors related to SI | 1A: Independent variables included age, gender, economic status, perception of poor health, unmarried, QOL-PHY, QOL-PSY, and five items of BSRS-5 item. |
1B: Independent variables included: variables were the same as those in the Model 1A except for the variable of BSRS-5 total scores greater than 5, which replaced the BSRS-5 item 1 through 5. | |
Model 2: Multivariate logistic models exploring the items of WHOQOL-BREF related to SI | 2A: Independent variables included BSRS-5 item 2 (depression), item 4 (inferiority), item 5 (insomnia), and all items of QOL-PHY except QOL11 (feeling of bodily appearance) and QOL17 (level of daily activities). |
2B: Independent variables: all were the same as those in Model 2A except for the variable of BSRS-5 total scores greater than 5 replacing BSRS-5 item 2 (depression), item 4 (inferiority), item 5 (insomnia). | |
Model 3: Univariate logistic regression models exploring factors related to MTS-WTD in those who had SI | Independent variables: variables in Model 1A and 28 items of the WHOOQOL-BREF except for the individual sum of four domains of WHOOQOL-BREF, i.e., QOL-PHY, QOL-PSY, QOL-ENV, QOL-SR |
Model 4: Comparison between different propensity score models of BSRS-5 predicting SI using ROC curve analysis. | State variable in 4A-4C: propensity score from individual propensity score model |
4A: predictor variables included BSRS-5 item 2 (depression), item 4 (inferiority), and item 5 (insomnia) | |
4B: predictor variable: the variable of BSRS-5 total scores greater than 5 | |
4C: predictor variables included all five items of BSRS-5 |