Table 3 Logistic regression model of non‐zero total health care costs in 2000 (part 1 of two part model).
| n = 418* | Log‐likelihood −99.05† | Pseudo r2 of the model = 0.43‡ |
|---|---|---|
| Independent variable | Coeff (95% CI) | p Value |
| Fee for service plan membership | −3.43 (−5.76 to −1.12) | 0.004 |
| Fee for service plan membership divided by age (women)§ | 138.51 (35.37 to 241.65) | 0.008 |
| Fee for service plan membership divided by age (men)§ | 143.83 (41.24 to 246.42) | 0.006 |
| Age (women) | 0.01 (−0.08 to 0.11) | 0.762 |
| Age2 (women) | −0.001 (−0.002 to −0.000) | 0.020 |
| Age (men) | −0.06 (−0.12 to −0.01) | 0.021 |
| 1996 outpatient costs (log scale) | 0.31 (0.18 to 0.43) | <0.001 |
| ICED score in 1996 | 0.67 (0.12 to 1.22) | 0.017 |
| ICED score increase between 1996 and 2000 | 0.73 (0.14 to 1.31) | 0.016 |
| SF‐36 General Health Scale score | −0.03 (−0.06 to −0.01) | 0.018 |
| Fixed beneficiary co‐payment¶ | ||
| Sw fr400 | −0.85 (−1.76 to 0.06 | 0.067 |
| Sw fr600 | −0.92 (−2.23 to 0.39) | 0.171 |
| ⩾Sw fr1200 | −1.92 (−3.04 to −0.79) | 0.001 |
| Importance assigned to low insurance premiums** | 0.41 (0.07 to 0.75) | 0.019 |
| Self reported low aversion of consulting a doctor** | −0.43 (−0.81 to −0.06) | 0.024 |
| Being retired | 1.75 (0.35 to 3.14) | 0.014 |
| Constant | 5.42 (1.96 to 8.89) | 0.002 |
*Number<466 because of missing values. †Uncritical Hosmer‐Lemeshow goodness of fit test (p = 0.54). ‡Predictions correct in 89%. §Term representing effect modification. ¶Compared with lawful minimum of CHF 230. **Per increase by 1 on a 5 point Likert scale.