Table 1.
Participation rate: descriptive statistics and estimates from univariable logistic models
| Total (N) | Adherent (%) | Odds ratio | 95% Confidence intervals | p value | |
|---|---|---|---|---|---|
| Age group | |||||
| 50–54 | 143,227 | 61,9% | 1.00 | ||
| 55–59 | 131,778 | 59.2% | 0.89 | 0.88–0.91 | <0.001 |
| 60–64 | 127,374 | 59.6% | 0.91 | 0.89–0.92 | <0.001 |
| 65–69 | 125,608 | 59.3% | 0.90 | 0.88–0.91 | <0.001 |
| Missing data | 0 | 0.0% | |||
| Citizenship | |||||
| Italian | 480,147 | 61.8% | 1.00 | ||
| HDC | 1733 | 44.4% | 0.49 | 0.45–0.54 | <0.001 |
| HMPC | 37,418 | 43.0% | 0.47 | 0.46–0.48 | <0.001 |
| Missing data | 8689 | 40.8% | |||
| Regularity | |||||
| First exam | 41,347 | 38,5% | 1.00 | ||
| Irregular | 65,222 | 46.5% | 1.39 | 1.35–1.42 | <0.001 |
| Regular | 312,723 | 66.8% | 3.21 | 3.14–3.27 | <0.001 |
| Missing data | 108,695 | 57.0% | |||
| Educational level | |||||
| University degree | 49,565 | 55.0% | 1.00 | ||
| High school | 113,771 | 58.2% | 1.14 | 1.12–1.16 | <0.001 |
| Middle school | 227,447 | 61.4% | 1.30 | 1.28–1.33 | <0.001 |
| Elementary school/no education | 128,083 | 62.6% | 1.37 | 1.34–1.40 | <0.001 |
| Missing data | 9121 | 40.5% | |||
| Deprivation level | |||||
| Lowest deprivation | 64,959 | 57.0% | 1.00 | ||
| Low deprivation | 71,851 | 59.7% | 1.12 | 1.10–1.15 | <0.001 |
| Medium deprivation | 100,425 | 59.9% | 1.11 | 1.09–1.14 | <0.001 |
| High deprivation | 116,848 | 61.8% | 1.21 | 1.18–1.23 | <0.001 |
| Highest deprivation | 172,927 | 60.3% | 1.13 | 1.11–1.16 | <0.001 |
| Missing data | 977 | 32.3% | |||
| Total | 527,987 | 60.1% | |||