aFood Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Osong, Korea
bDepartment of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
Copyright © 2015 Korea Centers for Disease Control and Prevention. Published by Elsevier Korea LLC. All rights reserved.
• The numbers of study in the Methods of the Abstract and the second paragraph in the Results section should be corrected as follows.
• The design of Cohn (2007)'s study in Table 1 should be corrected to Nested CC.
• The results related to study design in Table 2 should be changed as follows.
Studies included | No. of Studies | OR | 95% CI | Heterogeneity | Egger's test (p for bias) | |
---|---|---|---|---|---|---|
p | I2 (%) | |||||
Type of study design | ||||||
Hospital CC | 15 | 1.01 | 0.89 to 1.13 | 0.171 | 25.7 | 0.994 |
Population CC | 11 | 1.19 | 0.99 to 1.44 | 0.004 | 61.3 | 0.212 |
Nested CC | 11 | 0.92 | 0.83 to 1.03 | 0.377 | 7.0 | 0.160 |
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