Chunk #26 — Results — Subgroup analysis

Source: Smoking and Suicide: A Meta-Analysis.
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The quality of the studies was explored using NOS scale. According to this scale, there were 42 high-quality studies and 21 low-quality ones (Table 1). We performed subgroup analysis based on the quality of studies and compared the results of high-quality studies with low-quality ones (Table 2). There was no significant difference between the two groups.