Table 4. Logistic regression models for spousal concordance during 2002–2013 (N = 5,643 couples).
| Variables | Bivariate model | Multivariate model | ||||
|---|---|---|---|---|---|---|
| Crude OR |
95% CI | P-value | Adjusted OR |
95% CI | P-value | |
| Insured Spouse Characteristics | ||||||
| Sex | ||||||
| Female | — | — | — | — | — | — |
| Male | 1.120 | 0.862–1.456 | 0.3964 | 1.587 | 1.181–2.133 | 0.0022* |
| Age | ||||||
| 16–44 years | — | — | — | — | — | — |
| 45–54 years | 3.958 | 2.027–7.728 | < .0001* | 3.817 | 1.950–7.472 | < .0001* |
| 55–64 years | 9.780 | 5.162–18.529 | < .0001* | 8.084 | 4.224–15.473 | < .0001* |
| ≥ 65 years | 25.347 | 13.705–46.877 | < .0001* | 17.127 | 8.962–32.732 | < .0001* |
| Premium-based monthly salary (USD$) | ||||||
| ≤ 760 | — | — | — | — | — | — |
| 760–960 | 1.100 | 0.707–1.711 | 0.6738 | 0.814 | 0.481–1.377 | 0.4427 |
| 960–1210 | 1.668 | 1.022–2.723 | 0.0408* | 1.117 | 0.626–1.994 | 0.7078 |
| 1210–1526 | 2.723 | 1.475–5.026 | 0.0014* | 1.584 | 0.793–3.161 | 0.1924 |
| > 1526 | 2.033 | 1.276–3.238 | 0.0028* | 1.271 | 0.712–2.269 | 0.4174 |
| Occupation | ||||||
| First category (Private employee and government employee) | — | — | — | — | — | — |
| Second category (Labor union member) | 0.819 | 0.548–1.223 | 0.3285 | 1.106 | 0.693–1.766 | 0.6714 |
| Third category (Farmer and Fisherman) | 0.444 | 0.314–0.628 | < .0001* | 0.874 | 0.532–1.437 | 0.5965 |
| Fourth, fifth, and sixth categories (Soldier, social security insured, and veteran and religious group member) | 0.389 | 0.294–0.516 | < .0001* | 0.737 | 0.487–1.117 | 0.1500 |
| Urbanization level | ||||||
| Level 1 (Highest) | — | — | — | — | — | — |
| Level 2 | 1.224 | 0.909–1.649 | 0.1826 | 1.425 | 1.004–2.021 | 0.0472* |
| Level 3 | 1.485 | 1.019–2.164 | 0.0397* | 1.817 | 1.167–2.828 | 0.0082* |
| Level 4 | 1.108 | 0.761–1.612 | 0.5937 | 1.365 | 0.857–2.174 | 0.1908 |
| Level 5 (Lowest) | 1.202 | 0.773–1.869 | 0.4144 | 1.618 | 0.922–2.841 | 0.0935 |
| Region | ||||||
| Taipei | — | — | — | — | — | — |
| Northern | 0.854 | 0.609–1.197 | 0.3588 | 0.632 | 0.420–0.951 | 0.0278* |
| Central | 1.465 | 1.010–2.124 | 0.0440* | 1.188 | 0.783–1.802 | 0.4188 |
| Southern | 0.794 | 0.561–1.124 | 0.1933 | 0.681 | 0.445–1.041 | 0.0758 |
| Southeast | 1.141 | 0.786–1.657 | 0.4877 | 1.077 | 0.711–1.629 | 0.7271 |
| Eastern | 5.879 | 0.813–42.514 | 0.0793 | 6.420 | 0.863–47.770 | 0.0694 |
| Catastrophic illness or injury | ||||||
| Absent | — | — | — | — | — | — |
| Present | 2.277 | 1.671–3.104 | < .0001* | 1.527 | 1.004–2.001 | < .0001* |
| Comorbidity (CCI) | ||||||
| 0 | — | — | — | — | — | — |
| 1 | 1.129 | 0.514–2.644 | 0.2785 | 1.094 | 0.547–2.188 | 0.7985 |
| 2 | 1.685 | 1.342–2.842 | < .0001* | 1.556 | 1.009–3.618 | 0.0009* |
| ≥ 3 | 1.603 | 1.174–3.744 | 0.0009* | 1.422 | 0.817–2.475 | 0.3046 |
| Dependent Spouse Characteristics | ||||||
| Age | ||||||
| 16–44 years | — | — | — | — | — | — |
| 45–54 years | 3.702 | 2.094–6.542 | < .0001* | 3.405 | 1.921–6.035 | < .0001* |
| 55–64 years | 10.080 | 5.966–17.032 | < .0001* | 8.338 | 4.895–14.201 | < .0001* |
| ≥ 65 years | 20.737 | 12.473–34.475 | < .0001* | 13.882 | 8.162–23.609 | < .0001* |
| Catastrophic illness or injury | ||||||
| Absent | — | — | — | — | — | — |
| Present | 3.005 | 2.206–4.093 | < .0001* | 1.478 | 1.005–2.071 | 0.0232* |
| Comorbidity (CCI) | ||||||
| 0 | — | — | — | — | — | — |
| 1 | 1.289 | 0.694–2.394 | 0.4217 | 1.081 | 0.824–1.417 | 0.5737 |
| 2 | 2.367 | 1.929–2.904 | < .0001* | 1.904 | 1.453–2.496 | < .0001* |
| ≥ 3 | 1.319 | 1.142–2.711 | 0.0013* | 1.188 | 0.783–1.802 | 0.4188 |
* P < 0.05. OR: odds ratio