Table 3.
Adjusted ORs of polypharmacy from multivariable logistic regression model
| OR | P value | 95% CI | |
| Payment method | |||
| Full OOP payment | 1.00 | ||
| Medical card | 2.65 | <0.001 | 2.13 to 3.28 |
| Drugs payment scheme | 3.83 | <0.001 | 2.96 to 4.95 |
| Private health insurance | 0.82 | 0.568 | 0.42 to 1.62 |
| Long-term illness scheme | 4.24 | <0.001 | 3.06 to 5.87 |
| Age | 1.07 | <0.001 | 1.06 to 1.09 |
| Sex | |||
| Male | 1.00 | ||
| Female | 1.01 | 0.907 | 0.87 to 1.17 |
| Education | |||
| Primary | 1.00 | ||
| Secondary | 0.81 | 0.017 | 0.68 to 0.96 |
| Third level/higher | 0.88 | 0.208 | 0.73 to 1.07 |
| Employment | |||
| Employed | 1.00 | ||
| Retired | 1.31 | 0.015 | 1.05 to 1.63 |
| Other | 1.68 | <0.001 | 1.33 to 2.12 |
| Smoking status | |||
| Non-smoker | 1.00 | ||
| Smoker | 1.03 | 0.786 | 0.83 to 1.28 |
| Obesity status | |||
| Not obese | 1.00 | ||
| Obese | 1.56 | <0.001 | 1.33 to 1.84 |
| Self-rated health | |||
| Excellent | 1.00 | ||
| Very good | 1.08 | 0.595 | 0.82 to 1.46 |
| Good | 1.80 | <0.001 | 1.35 to 2.40 |
| Fair | 2.68 | <0.001 | 1.95 to 3.67 |
| Poor | 3.87 | <0.001 | 2.48 to 6.04 |
| Chronic illness | |||
| One or more chronic illnesses | 1.00 | ||
| No chronic illness | 0.34 | <0.001 | 0.30 to 0.40 |
| GP visits in the last year | |||
| None | 1.00 | ||
| 1–4 | 2.08 | 0.001 | 1.37 to 3.16 |
| 5–9 | 2.54 | <0.001 | 1.63 to 3.93 |
| 10–14 | 4.12 | <0.001 | 2.58 to 6.57 |
| 15+ | 4.20 | <0.001 | 2.32 to 7.63 |
| OPD visits in the last year | |||
| None | 1.00 | ||
| 1 | 1.27 | 0.012 | 1.05 to 1.54 |
| 2+ | 1.77 | <0.001 | 1.50 to 2.09 |
| n | 6042 | ||
| LR χ2 (df) | 1999 (23) | ||
| Pseudo-R2 | 0.2901 |
Source: Analysis of The Irish Longitudinal Study on Aging (TILDA) wave 3 data.