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. 2010 Mar 12;171(7):749–764. doi: 10.1093/aje/kwq004

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American Journal of Epidemiology © The Author 2010. Published by Oxford University Press on behalf of the Johns Hopkins Bloomberg School of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org.

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Figure 2. — Study-specific and random-effects summary odds ratios (ORs) for the associations between leukemia overall, acute lymphoblastic leukemia (ALL), and acute myeloid leukemia (AML) and A) atopy or allergies, B) asthma, C) eczema, D) hay fever, and E) hives. The size of each box indicates the relative weight of each study in the meta-analysis; the bars show the 95% confidence intervals (CIs). Higgins’ I² statistic and 95% CI, a measure of the degree of heterogeneity across studies, is also shown for each summary OR. The 95% CI could not be calculated for I² with fewer than 2 df. For Fraumeni et al. (19), the crude OR was calculated from data provided in the published article. For Bross and Natarajan (20), the age-adjusted OR was calculated from data provided in the paper by Smith et al. (55). For Söderberg et al. (14), results for children/adolescents under age 19 years were obtained from the first author (Karin Söderberg, Karolinska Institutet, personal communication, 2009).

Figure 2. — Study-specific and random-effects summary odds ratios (ORs) for the associations between leukemia overall, acute lymphoblastic leukemia (ALL), and acute myeloid leukemia (AML) and A) atopy or allergies, B) asthma, C) eczema, D) hay fever, and E) hives. The size of each box indicates the relative weight of each study in the meta-analysis; the bars show the 95% confidence intervals (CIs). Higgins’ I² statistic and 95% CI, a measure of the degree of heterogeneity across studies, is also shown for each summary OR. The 95% CI could not be calculated for I² with fewer than 2 df. For Fraumeni et al. (19), the crude OR was calculated from data provided in the published article. For Bross and Natarajan (20), the age-adjusted OR was calculated from data provided in the paper by Smith et al. (55). For Söderberg et al. (14), results for children/adolescents under age 19 years were obtained from the first author (Karin Söderberg, Karolinska Institutet, personal communication, 2009).