대한의료관련감염관리학회 Korean Society for Healthcare-associated infection Control and Prevention.

pISSN 0705-3797. eISSN 2586-1298.

Table. 3.

Table. 3.

Factors assoicated with a positive TST result and a positive IGRA result

TST IGRA


Negative n=1,416 Positive n=770 Univariate Multivariate Negative n=1,549 Positive n=637 Univariate Multivariate




OR 95%CI OR 95%CI OR 95%CI OR 95%CI
Age (year), mean 39.5 44.7 1.063 1.053 1.074 39.3 46.2 1.091 1.078 1.104
20-29 253 (11.6) 26 (1.2) 1 1 258 (16.7) 21 (3.3) 1 1
30-39 455 (20.8) 168 (7.7) 3.593 2.312 5.583 3.585 1.600 8.030 527 (34.0) 96 (15.1) 2.238 1.364 3.672 2.185 .930 5.134
40-49 493 (22.6) 369 (16.9) 7.283 4.759 11.147 5.619 2.486 12.703 555 (35.8) 307 (48.2) 6.796 4.264 10.831 4.272 1.819 10.028
50-59 186 (8.5) 196 (9.0) 10.254 6.533 16.094 6.631 2.802 15.694 189 (12.2) 193 (30.3) 12.546 7.702 20.436 6.391 2.611 15.644
≥61 29 (1.3) 11 (0.5) 3.691 1.654 8.238 2.439 .759 7.839 20 (1.3) 20 (3.1) 12.286 5.729 26.346 7.597 2.433 23.725
Gender, male 404 (28.5) 334 (43.4) 1.919 1.597 2.305 2.331 1.599 3.398 457 (29.5) 281 (44.1) 1.886 1.559 2.282 1.334 .904 1.969
Body mass index (kg/m2)
18.5-24.9 963 (76.6) 491 (68.5) 1 1 1,034 (75.2) 420 (70.1) 1 1
>18.5 86 (6.8) 29 (4.0) 4.349 1.995 9.485 .993 .615 1.603 98 (7.1) 17 (2.8) .427 .252 .724 .701 .386 1.272
25-29.9 193 (15.4) 175 (24.4) 1.512 .979 2.335 1.176 .898 1.542 224 (16.3) 144 (24.0) 1.583 1.247 2.008 1.012 .764 1.342
>29.9 15 (1.2) 22 (3.1) 2.689 1.684 4.294 2.723 1.272 5.832 19 (1.4) 18 (3.0) 2.332 1.212 4.488 1.974 .947 4.114
Findings on chest X-ray
No active lung lesion 1,091 (99.3) 666 (97.5) 1 1 1,208 (99.5) 549 (96.7) 1 1
Previously healed TB 8 (0.7) 17 (2.5) 3.481 1.494 8.111 2.703 1.122 6.510 6 (0.5) 19 (3.3) 6.968 2.767 17.543 5.166 1.953 13.667
Smoking status
Never smoker 984 (85.2) 503 (70.8) 1 1 1,075 (84.4) 412 (69.7) 1 1
Ex-smoker (quit ≥1 year) 102 (5.5) 112 (15.8) 2.148 1.609 2.868 .967 .643 1.452 116 (9.1) 98 (16.6) 2.204 1.646 2.952 1.100 .722 1.677
Current smoker 69 (6.0) 95 (13.4) 2.693 1.940 3.739 1.417 .907 2.215 83 (6.5) 81 (13.7) 2.546 1.837 3.530 1.495 .950 2.354
Smoking amount (pack-years), mean 10.3 12.7 1.023 1.001 1.046 10.1 12.9 1.030 1.008 1.053
<5 50 (29.2) 47 (22.7) 1 61 (30.7) 36 (20.1) 1
5-<10 53 (31.0) 50 (24.2) 1.004 .576 1.748 56 (28.1) 47 (26.3) 1.422 .808 2.504
10-<15 19 (11.1) 39 (18.8) 2.184 1.109 4.300 30 (15.1) 28 (15.6) 1.581 .818 3.058
>-15 49 (28.7) 71 (34.3) 1.541 .899 2.644 52 (26.1) 68 (38.0) 2.216 1.281 3.832
Health care professions
Physicians 142 (10.0) 82 (10.6) .851 .679 1.067 1.004 .645 1.564 162 (10.5) 62 (9.7) 1.336 1.040 1.716 .561 .355 .885
Nurses 427 (30.2) 211 (27.4) 1.169 .850 1.606 1.511 1.063 2.147 506 (32.7) 132 (20.7) 1.467 1.034 2.081 .626 .437 .897
Ancillary staff 542 (38.3) 228 (29.6) 1.649 1.145 2.374 1.297 .948 1.776 571 (36.9) 199 (31.2) 1.917 1.294 2.839 .757 .554 1.034
Technician_Laboratory Rad 81 (5.7) 66 (8.6) 1.653 1.280 2.135 1.248 .827 1.885 98 (6.3) 49 (7.7) 3.526 2.684 4.633 .656 .431 .999
Administrative 224 (15.8) 183 (23.8) 1 1 212 (13.7) 195 (30.6) 1 1
Working duration, months (mean) 181 233.7 1.004 1.003 1.004 177.6 252.8 1.005 1.005 1.006
<12 months 153 (10.8) 36 (4.7) 1 1 163 (10.5) 26 (4.1) 1 1
12-<60 months 234 (16.5) 43 (5.6) .781 .480 1.272 .849 .419 1.719 239 (15.4) 38 (6.0) .997 .583 1.706 .962 .447 2.072
60- <120 months 115 (8.1) 36 (4.7) 1.330 .790 2.241 .829 .411 1.672 126 (8.1) 25 (3.9) 1.244 .685 2.258 1.010 .464 2.197
120-<240months 329 (23.2) 193 (25.1) 2.493 1.664 3.735 1.285 .712 2.317 412 (26.6) 110 (17.3) 1.674 1.052 2.663 .976 .511 1.864
240-<360 months 466 (32.9) 386 (50.2) 3.520 2.390 5.186 1.451 .799 2.636 506 (32.7) 346 (54.3) 4.287 2.772 6.629 1.506 .795 2.851
>-360 months 119 (8.4) 75 (9.8) 2.679 1.684 4.260 1.217 .605 2.448 102 (6.6) 92 (14.4) 5.655 3.427 9.330 1.662 .802 3.444
Comorbidities
Hypertension 92 (7.9) 92 (13.0) 1.728 1.273 2.346 98 (7.7) 86 (14.5) 2.046 1.504 2.784
Diabetes mellitus 31 (2.7) 40 (5.6) 2.174 1.347 3.509 42 (3.3) 29 (4.9) 1.516 .935 2.459
Korean J healthc assoc Infect Control Prev 2020;25:46~53 https://doi.org/10.14192/kjicp.2020.25.1.46
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