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Table 1 Patient demographics before and after propensity score (PS) matching

From: Comparing the mortality risks of nursing professionals with diabetes and general patients with diabetes: a nationwide matched cohort study

Variables Before PS matching After PS matching (10:1)
Total General patients Nurse P-value Total General patients Nurse P-value
N % N % N %   N % N % N %  
Total patients 518,058 100.00 516,100 99.62 1958 0.38   18,601 100.00 16,910 90.91 1691 9.09  
Age         <0.001        0.928
  < 25 3092 0.60 2913 0.56 179 9.14   1194 6.42 1083 6.40 111 6.56  
  25–34 15,361 2.97 14,951 2.90 410 20.94   3214 17.28 2933 17.34 281 16.62  
  35–44 53,986 10.42 53,436 10.35 550 28.09   5568 29.93 5069 29.98 499 29.51  
  45–54 127,935 24.70 127,351 24.68 584 29.83   6059 32.57 5494 32.49 565 33.41  
  55–64 136,540 26.36 136,363 26.42 177 9.04   1894 10.18 1717 10.15 177 10.47  
  65 181,144 34.97 181,086 35.09 58 2.96   672 3.61 614 3.63 58 3.43  
Average age (Mean, Std) 59.22 13.15 59.29 13.11 42.01 12.03   44.14 11.86 44.19 11.87 43.60 11.78  
Monthly salary (NT$)        <0.001        0.659
  Low-income household 5010 0.97 5009 0.97 1 0.05   3 0.02 2 0.01 1 0.06  
  17,280 35,033 6.77 34,873 6.77 160 8.17   1826 9.82 1670 9.88 156 9.23  
  17,281 ~ 22,800 295,781 57.20 295,390 57.34 391 19.97   4312 23.18 3922 23.19 390 23.06  
  22,801 ~ 28,800 77,247 14.94 77,044 14.96 203 10.37   2011 10.81 1819 10.76 192 11.35  
  28,801 ~ 36,300 30,974 5.99 30,745 5.97 229 11.70   2015 10.83 1829 10.82 186 11.00  
  36,301 ~ 45,800 33,977 6.57 33,470 6.50 507 25.89   4128 22.19 3739 22.11 389 23.00  
  45,801 ~ 57,800 19,896 3.85 19,584 3.80 312 15.93   2540 13.66 2311 13.67 229 13.54  
  57,801 19,206 3.71 19,051 3.70 155 7.92   1766 9.49 1618 9.57 148 8.75  
  Missing data 934   934            
Urbanization of residence area        <0.001        0.181
  Level 1 141,455 27.35 140,779 27.33 676 34.53   6593 35.44 5998 35.47 595 35.19  
  Level 2 & 3 231,299 44.73 230,365 44.72 934 47.70   9149 49.19 8334 49.28 815 48.20  
  Level 4 & 5 94,836 18.34 94,589 18.36 247 12.61   2145 11.53 1944 11.50 201 11.89  
  Level 6 & 7 49,533 9.58 49,432 9.60 101 5.16   714 3.84 634 3.75 80 4.73  
  Missing data 935   935            
Catastrophic illnesses        0.318        0.158
  No 503,285 97.15 501,375 97.15 1910 97.55   18,200 97.84 16,554 97.89 1646 97.34  
  Yes 14,773 2.85 14,725 2.85 48 2.45   401 2.16 356 2.11 45 2.66  
Moderate to severe kidney disease        0.218        0.085
  No 440,556 85.04 438,871 85.04 1685 86.06   16,425 88.30 14,954 88.43 1471 86.99  
  Yes 77,502 14.96 77,229 14.96 273 13.94   2176 11.70 1956 11.57 220 13.01  
CCI        <0.001        0.247
  0 8776 1.69 8751 1.70 25 1.28   233 1.25 212 1.25 21 1.24  
  1 ~ 3 129,044 24.91 128,410 24.88 634 32.38   6438 34.61 5881 34.78 557 32.94  
  4 ~ 6 148,079 28.58 147,421 28.56 658 33.61   6130 32.96 5581 33.00 549 32.47  
  7 ~ 9 125,612 24.25 125,197 24.26 415 21.20   3858 20.74 3493 20.66 365 21.58  
  10 106,547 20.57 106,321 20.60 226 11.54   1942 10.44 1743 10.31 199 11.77  
Average CCI (Mean, Std) 6.33 3.78 6.33 3.78 5.41 3.39   5.18 3.29 5.15 3.28 5.43 3.42  
DCSI        <0.001        0.438
  0 359,786 69.45 358,301 69.42 1485 75.84   14,358 77.19 13,075 77.32 1283 75.87  
  1 79,434 15.33 79,144 15.34 290 14.81   2737 14.71 2480 14.67 257 15.20  
  2 52,368 10.11 52,232 10.12 136 6.95   1118 6.01 1009 5.97 109 6.45  
  3 26,470 5.11 26,423 5.12 47 2.40   388 2.09 346 2.05 42 2.48  
Average DCSI (Mean, Std) 0.54 0.98 0.54 0.98 0.37 0.76   0.34 0.73 0.34 0.73 0.36 0.75  
  1. Abbreviations: CCI Charlson Comorbidity Index, DCSI Diabetes Complications Severity Index, PS propensity score
  2. It’s 30 New Taiwan Dollar (NT$) per US dollar
  3. Urbanization level of residence area (overall 7 levels; Level 1 was the most urbanized)
  4. The p values less than 0.05 was considered statistically significant