Table 1 Characteristics of the participants before and after propensity score matching
Variables | Before PSM | After PSM | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CDMF (n = 6,037) | Non-CDMF (n = 5,878) | SMD | P-value | CDMP (n = 4,617) | Non-CDMP (n = 4,617) | SMD | P-value | |||||
n | % | n | % | n | % | n | % | |||||
Age group | ||||||||||||
 20–39 | 685 | 11.35% | 935 | 15.91% | 0.1354 |  < 0.0001 | 611 | 13.23% | 628 | 13.60% | 0.019 | 0.6554 |
 40–59 | 3,558 | 58.94% | 3,346 | 56.92% |  |  | 2,716 | 58.83% | 2,736 | 59.26% |  |  |
  ≥ 60 | 1,794 | 29.72% | 1,597 | 27.17% |  |  | 1,290 | 27.94% | 1,253 | 27.14% |  |  |
Sex | ||||||||||||
 Male | 3,578 | 59.27% | 3,716 | 63.22% | 0.0812 |  < 0.0001 | 2,884 | 62.46% | 2,862 | 61.99% | 0.010 | 0.6368 |
 Female | 2,459 | 40.73% | 2,162 | 36.78% |  |  | 1,733 | 37.54% | 1,755 | 38.01% |  |  |
Year of diagnosis | ||||||||||||
 2010 | 1,264 | 20.94% | 1,147 | 19.51% | 0.0747 | 0.0023 | 949 | 20.55% | 927 | 20.08% | 0.023 | 0.8739 |
 2011 | 1,316 | 21.80% | 1,186 | 20.18% |  |  | 940 | 20.36% | 971 | 21.03% |  |  |
 2012 | 1,229 | 20.36% | 1,189 | 20.23% |  |  | 964 | 20.88% | 938 | 20.32% |  |  |
 2013 | 1,178 | 19.51% | 1,196 | 20.35% |  |  | 930 | 20.14% | 934 | 20.23% |  |  |
 2014 | 1,050 | 17.39% | 1,160 | 19.73% |  |  | 834 | 18.06% | 847 | 18.35% |  |  |
Economic status (quantile) | ||||||||||||
 1st (low) | 885 | 15.22% | 832 | 14.83% | 0.0192 | 0.9012 | 680 | 14.73% | 698 | 15.12% | 0.032 | 0.6781 |
 2nd | 906 | 15.58% | 905 | 16.13% |  |  | 740 | 16.03% | 734 | 15.90% |  |  |
 3rd | 1,109 | 19.07% | 1,084 | 19.32% |  |  | 847 | 18.35% | 893 | 19.34% |  |  |
 4th | 1,326 | 22.80% | 1,262 | 22.49% |  |  | 1,080 | 23.39% | 1,042 | 22.57% |  |  |
 5th (high) | 1,590 | 27.34% | 1,529 | 27.25% |  |  | 1,270 | 27.51% | 1,250 | 27.07% |  |  |
Healthcare insurance typea | ||||||||||||
 NHIS, employees | 2,234 | 37.01% | 2,001 | 34.04% | 0.0683 | 0.0010 | 1,696 | 36.73% | 1,711 | 37.06% | 0.007 | 0.7463 |
 NHIS, self-employed | 3,620 | 59.97% | 3,661 | 62.28% |  |  | 2,921 | 63.27% | 2,906 | 62.94% |  |  |
 Medical aid | 182 | 3.02% | 216 | 3.67% |  |  | 0 | 0.00% | 0 | 0.00% |  |  |
Region of residencea | ||||||||||||
 Seoul capital area | 3,003 | 49.75% | 2,746 | 46.72% | 0.0766 | 0.0002 | 2,246 | 48.65% | 2,242 | 48.56% | 0.002 | 0.9937 |
 Metropolitan city | 1,213 | 20.10% | 1,154 | 19.63% |  |  | 916 | 19.84% | 915 | 19.82% |  |  |
 Other regions | 1,820 | 30.15% | 1,978 | 33.65% |  |  | 1,455 | 31.51% | 1,460 | 31.62% |  |  |
Hypertension | ||||||||||||
 No | 3,491 | 57.83% | 4,249 | 72.29% | 0.312 |  < 0.0001 | 3,152 | 68.27% | 3,152 | 68.27% |  < 0.001 | 1.000 |
 Yes | 2,546 | 42.17% | 1,629 | 27.71% |  |  | 1,465 | 31.73% | 1,465 | 31.73% |  |  |
Hyperlipidemia | ||||||||||||
 No | 3,421 | 56.67% | 3,891 | 66.20% | 0.197 |  < 0.0001 | 2,932 | 63.50% | 2,926 | 63.37% | 0.003 | 0.8968 |
 Yes | 2,616 | 43.33% | 1,987 | 33.80% |  |  | 1,685 | 36.50% | 1,691 | 36.63% |  |  |
Charlson Comorbidity Index | ||||||||||||
 0 | 986 | 16.33% | 1,009 | 17.17% | 0.0788 | 0.0001 | 799 | 17.31% | 775 | 16.79% | 0.016 | 0.7327 |
 1–2 | 2,328 | 38.56% | 2,044 | 34.77% |  |  | 1,674 | 36.26% | 1,666 | 36.08% |  |  |
  ≥ 3 | 2,723 | 45.11% | 2,825 | 48.06% |  |  | 2,144 | 46.44% | 2,176 | 47.13% |  |  |