Variance Inflation Factor Presented for the Multivariate Analysis of Factors Affecting Hospitalization Among Veterans at VHA Primary Care Clinics Across the United States and in King County, WA in 2015
| Variables | Variance Inflation Factor* (Degree of Freedom) | |||
|---|---|---|---|---|
| United States | King County, WA | |||
| Model 1 | Model 2 | Model 1 | Model 2 | |
| Age | 1.068765 (1) | 1.071784 (1) | 1.068765 (1) | 1.071784 (1) |
| Sex | 1.032169 (1) | 1.032579 (1) | 1.032169 (1) | 1.032579 (1) |
| Reported Race | 1.053327 (1) | 1.055482 (1) | 1.053327 (1) | 1.055482 (1) |
| Gagne Comorbidity Score | 1.014003 (1) | 1.015308 (1) | 1.014003 (1) | 1.015308 (1) |
| NSES Index | 1.036799 (3) | 1.438241 (3) | 1.036799 (3) | 1.438241 (3) |
| Housing Issues | ||||
| Housing Instability | 1.582049 (1) | 1.582049 (1) | ||
| Home Vacancy Rate | 1.025891 (1) | 1.025891 (1) | ||
| Characteristics of the House | ||||
| Percentage of houses with no plumbing | 1.253458 (1) | 1.253458 (1) | ||
| Percentage of houses with no heating | 1.248236 (1) | 1.248236 (1) | ||
↵* Variance Inflation Factor close to 1 presents least collinearity among variables in a model.
Model 1. GEE Model—Patient-level characteristics and NSES index.
Model 2. GEE Model—Patient-level characteristics, NSES index, and housing issues.
NSES, Neighborhood socioeconomic status; VHA, Veterans Health Administration.