Table 1.
Total (N = 6475) | PSK group (N = 1295) | Control group (N = 5180) | P value* | ||||
---|---|---|---|---|---|---|---|
Variables | n | % | n | % | n | % | |
Sex | 0.620 | ||||||
Female | 2252 | 34.8 | 458 | 35.4 | 1794 | 34.6 | |
Male | 4223 | 65.2 | 837 | 64.6 | 3386 | 65.4 | |
Age at surgery (yr) | 0.524 | ||||||
18–44 | 769 | 11.9 | 159 | 12.3 | 610 | 11.8 | |
45–59 | 1832 | 28.3 | 362 | 28.0 | 1470 | 28.4 | |
60–74 | 2754 | 42.5 | 566 | 43.7 | 2188 | 42.2 | |
≥75 | 1120 | 17.3 | 208 | 16.1 | 912 | 17.6 | |
Mean (SD) | 61.6 (13.2) | 61.3 (13.2) | 61.7 (13.2) | 0.379 | |||
Urbanization | 0.968 | ||||||
Very high | 1911 | 29.5 | 385 | 29.7 | 1526 | 29.5 | |
High | 2995 | 46.3 | 596 | 46.0 | 2399 | 46.3 | |
Moderate | 1143 | 17.7 | 232 | 17.9 | 911 | 17.6 | |
Low | 426 | 6.6 | 82 | 6.3 | 344 | 6.6 | |
Income level (NTD†/per month) | 0.901 | ||||||
0 | 1042 | 16.1 | 201 | 15.5 | 841 | 16.2 | |
1–15,840 | 856 | 13.2 | 170 | 13.1 | 686 | 13.2 | |
15,841–25,000 | 3149 | 48.6 | 631 | 48.7 | 2518 | 48.6 | |
≥25,001 | 1428 | 22.1 | 293 | 22.6 | 1135 | 21.9 | |
Comorbidities | |||||||
Diabetes mellitus | 1026 | 15.9 | 203 | 15.7 | 823 | 15.9 | 0.852 |
Hypertension | 2270 | 35.1 | 451 | 34.8 | 1819 | 35.1 | 0.845 |
Alcoholism | 115 | 1.8 | 21 | 1.6 | 94 | 1.8 | 0.638 |
Smoking-related disorders | 609 | 9.4 | 121 | 9.3 | 488 | 9.4 | 0.932 |
Chronic renal failure | 100 | 1.5 | 19 | 1.5 | 81 | 1.6 | 0.801 |
Liver cirrhosis | 210 | 3.2 | 44 | 3.4 | 166 | 3.2 | 0.725 |
Chemotherapy regimens | <0.001 | ||||||
Group 1 (mitomycin-based) | 1357 | 21.0 | 508 | 39.2 | 849 | 16.4 | |
Group 2 (epirubicin-based) | 410 | 6.3 | 47 | 3.6 | 363 | 7.0 | |
Group 3 (platinum-based) | 1204 | 18.6 | 184 | 14.2 | 1020 | 19.7 | |
Group 4 (others) | 3504 | 54.1 | 556 | 42.9 | 2948 | 56.9 |
Pearson chi-square test for categorical variables and t-test for continuous variables.
1 United States dollar (US$) = 32.3 New Taiwan Dollars (NTD) in 2008.
PSK = protein-bound polysaccharide K, SD = standard deviation.