Variables | Total patients | Patients with thyroid fine-needle aspiration biopsy | ||||||
---|---|---|---|---|---|---|---|---|
RRa | 95% CI | P-value | RRa | 95% CI | P-value | |||
Regional variables | ||||||||
Number of thyroid fine-needle aspiration biopsy in Si-Gun-Gu (per 100,000 people; per 100 increase) | 1.108 | 1.090 | 1.126 | <0.0001 | 0.973 | 0.952 | 0.995 | 0.0143 |
Financial independence rate of local government (per 10%) | 1.037 | 0.955 | 1.125 | 0.3849 | 1.003 | 0.992 | 1.015 | 0.5599 |
Individual variables | ||||||||
Sex | ||||||||
Male | 0.206 | 0.194 | 0.220 | <0.0001 | 1.075 | 0.990 | 1.168 | 0.0852 |
Female | 1.000 | - | - | - | 1.000 | - | - | - |
Age (years) | ||||||||
0–19 | 0.059 | 0.038 | 0.093 | <0.0001 | 1.359 | 0.703 | 2.627 | 0.3613 |
20–29 | 1.155 | 0.864 | 1.543 | 0.3313 | 1.700 | 1.065 | 2.713 | 0.0263 |
30–39 | 3.334 | 2.532 | 4.391 | <0.0001 | 1.796 | 1.142 | 2.824 | 0.0113 |
40–49 | 5.389 | 4.100 | 7.082 | <0.0001 | 1.519 | 0.968 | 2.385 | 0.0689 |
50–59 | 6.430 | 4.892 | 8.450 | <0.0001 | 1.219 | 0.776 | 1.913 | 0.3897 |
60–69 | 4.721 | 3.578 | 6.230 | <0.0001 | 0.921 | 0.584 | 1.453 | 0.7245 |
70–79 | 2.542 | 1.901 | 3.398 | <0.0001 | 0.858 | 0.535 | 1.376 | 0.5248 |
80+ | 1.000 | - | - | - | 1.000 | - | - | - |
Type of insurance coverage | ||||||||
Medical Aid | 0.768 | 0.642 | 0.919 | 0.0040 | 1.466 | 1.101 | 1.952 | 0.0087 |
NHI (self-employed) | 0.785 | 0.745 | 0.827 | <0.0001 | 1.014 | 0.947 | 1.085 | 0.6984 |
NHI (employed) | 1.000 | - | - | - | 1.000 | - | - | - |
Income (percentiles) | ||||||||
0–29% | 0.640 | 0.591 | 0.692 | <0.0001 | 0.879 | 0.794 | 0.974 | 0.0135 |
30–59% | 0.725 | 0.682 | 0.771 | <0.0001 | 0.965 | 0.892 | 1.045 | 0.3839 |
60%+ | 1.000 | - | - | - | 1.000 | - | - | - |
Year | ||||||||
2003 | 1.000 | - | - | - | 1.000 | - | - | - |
2004 | 0.853 | 0.727 | 1.001 | 0.0517 | 0.784 | 0.597 | 1.029 | 0.0795 |
2005 | 0.907 | 0.776 | 1.060 | 0.2187 | 0.770 | 0.593 | 1.000 | 0.0500 |
2006 | 1.029 | 0.885 | 1.197 | 0.7092 | 0.878 | 0.686 | 1.125 | 0.3051 |
2007 | 1.258 | 1.086 | 1.456 | 0.0022 | 0.924 | 0.727 | 1.174 | 0.5179 |
2008 | 1.438 | 1.243 | 1.664 | <0.0001 | 0.927 | 0.730 | 1.178 | 0.5372 |
2009 | 1.765 | 1.530 | 2.035 | <0.0001 | 1.023 | 0.807 | 1.297 | 0.8505 |
2010 | 1.583 | 1.361 | 1.842 | <0.0001 | 0.870 | 0.680 | 1.112 | 0.2646 |
2011 | 1.757 | 1.509 | 2.045 | <0.0001 | 1.026 | 0.804 | 1.309 | 0.8379 |
2012 | 1.725 | 1.477 | 2.015 | <0.0001 | 1.041 | 0.813 | 1.332 | 0.7510 |
2013 | 1.579 | 1.345 | 1.854 | <0.0001 | 1.067 | 0.830 | 1.371 | 0.6152 |
Region (distance from Seoul) | ||||||||
Gangwon-do (100.6 km) | 1.001 | 0.662 | 1.515 | 0.9960 | 0.999 | 0.557 | 1.789 | 0.9959 |
Gyeonggi-do (40.0 km) | 1.192 | 1.042 | 1.364 | 0.0107 | 0.955 | 0.792 | 1.151 | 0.6277 |
Gyeongsangnam-do (366.4 km) | 1.234 | 0.925 | 1.647 | 0.1526 | 1.130 | 0.760 | 1.680 | 0.5457 |
Gyeongsangbuk-do (225.5 km) | 1.293 | 0.882 | 1.897 | 0.1879 | 1.322 | 0.777 | 2.249 | 0.3028 |
Gwangju (295.3 km) | 1.435 | 1.124 | 1.832 | 0.0037 | 0.882 | 0.634 | 1.226 | 0.4537 |
Daegu (288.3 km) | 1.325 | 1.099 | 1.598 | 0.0032 | 1.106 | 0.850 | 1.437 | 0.4539 |
Daejeon (160.9 km) | 1.735 | 1.451 | 2.075 | <0.0001 | 1.445 | 1.130 | 1.848 | 0.0033 |
Busan (394.2 km) | 1.048 | 0.883 | 1.244 | 0.5927 | 1.238 | 0.974 | 1.574 | 0.0810 |
Seoul | 1.238 | 1.003 | 1.528 | 0.0468 | 1.038 | 0.776 | 1.388 | 0.7999 |
Ulsan (395.7 km) | 1.354 | 1.121 | 1.636 | 0.0017 | 1.370 | 1.074 | 1.746 | 0.0111 |
Incheon (37.7 km) | 1.000 | - | - | - | ||||
Jeollanam-do (346.3 km) | 1.774 | 1.150 | 2.737 | 0.0095 | 1.387 | 0.751 | 2.562 | 0.2954 |
Jeollabuk-do (216.9 km) | 1.398 | 0.924 | 2.113 | 0.1125 | 1.263 | 0.710 | 2.245 | 0.4275 |
Jeju-do (541.6 km) | 1.535 | 0.996 | 2.366 | 0.0522 | 1.436 | 0.794 | 2.598 | 0.2315 |
Chungcheongnam-do (129.9 km) | 1.383 | 0.982 | 1.946 | 0.0633 | 1.239 | 0.772 | 1.990 | 0.3746 |
Chungcheongbuk-do (137.1 km) | 1.130 | 0.780 | 1.636 | 0.5188 | 0.960 | 0.564 | 1.634 | 0.8805 |
QIC | 99756.63 | 24319.41 |