All final models were age and gender adjusted.
Final models were age and gender-adjusted but otherwise included only variables whose odds ratios were significant at p ≤0.05.
Final models were age and gender-adjusted with model selection based on variables whose unadjusted odds ratios were significant at p ≤ 0.2.
Covariates included in the GEE models were age, sex, marital status, race, payer type, procedural approach, patient comorbidities, urban vs. rural hospital, hospital teaching status, hospital geographic region, hospital bed size and procedure volume, operating physician specialty, calendar year of surgery, and hospital procedural costing type.
Significant covariates retained in the final models were age, stress and non-healthy behaviours.
Sets of independent variables used in the multivariate models were age [model I], age, education, and poverty [model II], age, education, poverty, and country [model III], and age, education, poverty, country, and alcohol and smoking behaviours [model IV].
The A models were age adjusted models.
Covariates entered into the models were age, gender, education, and language of administration.
Variables included in the models were age, sex, ethnicity, CD4 count, and HIV transmission route.
The covariates included in the models were age, gender, relevant baseline HRQL measure.
Covariates for the Cox proportional hazard models were age, stroke, hypertension, cardiovascular disease, and diabetes.
