Table 1. Comparisons of characteristics after 1:1 dual propensity score matching for couples and noncouples (N = 11,286 pairs).
| Variables 1 | Insured spouse | Counterpart of insured spouse | χ2 P-value |
Dependent spouse | Counterpart of dependent spouse | χ2 P-value |
||||
|---|---|---|---|---|---|---|---|---|---|---|
| n1 | % | n2 | % | n3 | % | n4 | % | |||
| Sex | 1.0000 | 1.0000 | ||||||||
| Female | 1,460 | 25.87 | 1,460 | 25.87 | 4,183 | 74.13 | 4,183 | 74.13 | ||
| Male | 4,183 | 74.13 | 4,183 | 74.13 | 1,460 | 25.87 | 1,460 | 25.87 | ||
| Age | 1.0000 | 1.0000 | ||||||||
| 16–44 years | 1,674 | 29.67 | 1,674 | 29.67 | 2,089 | 37.02 | 2,089 | 37.02 | ||
| 45–54 years | 1,607 | 28.48 | 1,607 | 28.48 | 1,391 | 24.65 | 1,391 | 24.65 | ||
| 55–64 years | 1,185 | 21.00 | 1,185 | 21.00 | 1,152 | 20.41 | 1,152 | 20.41 | ||
| ≥ 65 years | 1,117 | 20.86 | 1,117 | 20.86 | 1,011 | 17.92 | 1,011 | 17.92 | ||
| Comorbidity (CCI) | 1.0000 | 1.0000 | ||||||||
| 0 | 3,853 | 68.47 | 3,853 | 68.47 | 4,102 | 72.91 | 4,102 | 72.91 | ||
| 1 | 1,575 | 27.99 | 1,575 | 27.99 | 1,329 | 23.62 | 1,329 | 23.62 | ||
| 2 | 111 | 1.97 | 111 | 1.97 | 114 | 2.03 | 114 | 2.03 | ||
| ≥ 3 | 88 | 1.56 | 88 | 1.56 | 81 | 1.44 | 81 | 1.44 | ||
1Sex, age, and comorbidities were matched twice for a total of four individuals of couples and noncouples.