Figure 1.
Flow chart of study selection.
Table 1.
Descriptions of the ten WTC studies included in the meta-analysis.
Table 2.
Summary of the six WTC exposure types from the ten studies included in the meta-analysis.
Figure 2.
Funnel plot of the log odds ratios (ORs) of probable PTSD risks associated with WTC-related exposure for the meta-analysis of the ten studies included in the meta-analysis.
Note: The points correspond to the 37 individual ORs. The funnel shape indicates the expected 95% confidence intervals around the summary estimate (vertical line). Little evidence of publication bias was found based on the symmetry of the funnel plot, which was also confirmed by both the Begg's test (p-value = 0.89) and Egger's test (p-value = 0.93).
Figure 3.
Forest plot of odds ratios (ORs and 95% confidence intervals) of probable PTSD risks associated with four specific WTC exposure types common between the responders and civilians.
Note: Individual ORs from the original studies, summary ORs for the exposure subgroups, and the overall OR were presented. Details of the studies (a–j) and cohort types were shown in Table 1. IDs (1–37) corresponded to individual ORs in Table S1.
Figure 4.
Forest plot of odds ratios (ORs and 95% confidence intervals) of probable PTSD risks associated with five specific WTC exposure types common among the responders.
Note: Individual ORs from the original studies, summary ORs for the exposure subgroups, and the overall OR were presented. Details of the studies (a–j) and cohort types were shown in Table 1. IDs (1–37) corresponded to individual ORs in Table S1.
Figure 5.
Forest plot of odds ratios (ORs and 95% confidence intervals) of probable PTSD risks associated with four specific WTC exposure types common among the civilians.
Note: Individual ORs from the original studies, summary ORs for the exposure subgroups, and the overall OR were presented. Details of the studies (a–j) and cohort types were shown in Table 1. IDs (1–37) corresponded to individual ORs in Table S1.