1Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
2Department of Food and Nutrition, Hoseo University, Asan, Korea.
3Institue of Environmental & Occupational Medicine, Soonchunhyang University, Asan, Korea.
4Korea Industrial Health Association, Seoul, Korea.
Copyright © 2013 The Korean Society for Preventive Medicine
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Published year |
No. of research articles (%) |
||
---|---|---|---|
Ordinary statistical analysis | Design-based analysis | Total | |
2007 | 12 (92.3) | 1 (7.7) | 13 |
2008 | 15 (88.2) | 2 (11.8) | 17 |
2009 | 24 (88.8) | 3 (11.2) | 27 |
2010 | 40 (87.0) | 6 (13.0) | 46 |
2011 | 58 (76.3) | 18 (23.7) | 76 |
20121 | 57 (73.1) | 21 (26.9) | 78 |
Total | 206 (80.2) | 51 (19.8) | 257 |
Independent variable | Ordinary statistical analysis | Design-based analysis |
---|---|---|
Odds ratio (95% confidence interval)2 |
||
Model 1. Dependent variable: hypertension | ||
Log blood lead (μg/dL) | 0.983 (0.859, 1.124) | 0.999 (0.854, 1.170) |
Log blood cadmium (μg/L) | 1.240 (1.123, 1.369) | 1.249 (1.117, 1.398) |
Log blood mercury (μg/L) | 0.963 (0.882, 1.051) | 0.968 (0.878, 1.068) |
Model 2. Dependent variable: pre-hypertension | ||
Log blood lead (μg/dL) | 1.137 (0.995, 1.298) | 1.173 (1.001, 1.375) |
Log blood cadmium (μg/L) | 1.295 (1.178, 1.423) | 1.279 (1.147, 1.426) |
Log blood mercury (μg/L) | 0.902 (0.827, 0.984) | 0.924 (0.833, 1.023) |
Independent variable | Ordinary statistical analysis | Design-based analysis | |
---|---|---|---|
Odds ratio (95% confidence interval) |
|||
Model 1. Continuous blood metals | |||
Log blood lead (μg/dL) | 1.771 | 2.371 | |
(1.029, 3.047)2 | (1.307, 4.301)2 | ||
Log blood cadmium (μg/L) | 0.899 | 0.952 | |
(0.575, 1.406)2 | (0.584, 1.552)2 | ||
Log blood mercury (μg/L) | 0.488 | 0.628 | |
(0.320, 0.743)2 | (0.376, 1.048)2 | ||
Model 2. Categorized blood mercury | |||
≤2.504 | 1 (reference) | 1 (reference) | |
Blood mercury quartiles (μg/L) | >2.504 to 3.487 | 0.863 | 1.122 |
(0.475, 1.569) | (0.537, 2.345) | ||
>3.487 to 5.001 | 0.611 | 0.944 | |
(0.342, 1.093) | (0.475, 1.877) | ||
>5.001 | 0.450 | 0.575 | |
(0.251, 0.808) | (0.280, 1.181) |