Table 3. Regression analysis of severity of illness and cost among post-surgical peripheral vascular patients.
| Variables | |
|---|---|
| Acute physiology score | 5.88* (10.64) |
| Age groups | |
| 45-54 | −1.15 (−0.07) |
| 55-64 | 8.44 (0.65) |
| 65-74 | 17.96 (1.39) |
| 75 years or over | 9.43 (0.68) |
| Severe chronic health | − 26.57 (−2.56) |
| Intercept | 1.08 (0.08) |
| R-squared | .217 |
| F ratio | 22.13* |
| N | 486. |
*
Significantly (p< .001) different from 0.0. (t-ratios are in parentheses).
NOTE: The dependent variable is measured in therapeutic intervention scoring system (TISS) points, a nursing intensity scale whose total costs were approximately $60 per unit in 1979.