“…Based on this model, health outcomes and healthcare use may be influenced by predisposing factors (e.g., age and sex), enabling factors (e.g., education level and health insurance), need factors (e.g., physical and mental health) and personal health practices (e.g., smoking status). Also, previously conducted studies have shown that demographics, socioeconomic status, health insurance and comorbid conditions are associated with HRQoL [32,33]. Other explanatory variables include sex (female, male); age (21-39, 40-49, 50-64 and 65 years or older); race/ethnicity (White, African American, Latino, and other); marital status (married, separated/divorced, widowed and never married); poverty status: poor (less than 100% federal poverty line), near poor (100% to less than 200%), middle income (200% to less than 400%), and high income (greater than or equal to 400%); health insurance coverage (private, public, uninsured); prescription drug coverage (yes or no); presence of other cooccurring physical conditions (asthma, arthritis, cancer, gastroesophageal reflux disease (GERD), heart diseases, hypertension, osteoporosis, thyroid, and chronic obstructive pulmonary disease (COPD)); smoking status (current smoker and others); Body Mass Index (BMI) categories (underweight/normal (≤24.9), overweight (25-29.9), obese (≥ 30)); and physical activity (vigorous or moderate activities at least 3 days a week and other).…”