Canadian Respiratory Journal / 2017 / Article / Tab 3

Review Article

Occupational Exposure to Talc Increases the Risk of Lung Cancer: A Meta-Analysis of Occupational Cohort Studies

Table 3

Stratification of cohort studies by subgroups.

Meta-SMR95% CI

Type of talc
 Nonasbestiform talc71.511.02–2.220.87
 Talc with asbestiform fiber71.451.18–1.78
 Talc user industry71.411.14–1.760.87
 Talc-producing industry71.471.02–2.11
 North America42.011.34–3.00
Duration of follow-up
 <20 years41.761.03–3.000.72
 20–40 years71.511.18–1.92
 ≥40 years31.280.75–2.19
Publication language
Study quality (NOS score)
 High (8-9)111.321.74–3.71<0.01
 Medium (6-7)32.541.11–1.56
 Low (1–5)0

Number of cohorts included. Test for between-subgroup differences (random effects model).

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