Table 3 Association of professional characteristics with good attitude in data extraction and MA procedures
Items | Years of experience (> 5 years) | Number of publications (> 14) | Highest impact factor journals of published papers (> 10) | ||||||
|---|---|---|---|---|---|---|---|---|---|
OR | 95% CI | P value | OR | 95% CI | P value | OR | 95% CI | P value | |
Number of databases used (> 6 databases) | 1 | 0.6–1.6 | 0.9 | 1.5 | 0.9–2.5 | 0.2 | 0.8 | 0.5–1.4 | 0.5 |
Search Grey Literature Databases | 2.1 | 1.4–3.2 | < 0.001 | 2.6 | 1.5–4.2 | < 0.001 | 1.3 | 0.8–2.0 | 0.4 |
Performing manual search | 0.8 | 0.5–1.2 | 0.3 | 0.8 | 0.5–1.3 | 0.3 | 0.8 | 0.5–1.3 | 0.3 |
Update the search to get more papers | 0.8 | 0.4–1.5 | 0.4 | 0.6 | 0.3–1.3 | 0.2 | 1.1 | 0.5–2.4 | 0.7 |
Number of reviewers to extract the data (≥2) | 1.3 | 0.8–2.0 | 0.2 | 1.9 | 1.1–3.3 | 0.03 | 1.6 | 0.9–2.8 | 0.09 |
Using digital software to extract data from figures | 1.6 | 0.9–2.7 | 0.07 | 2.4 | 1.4–4.1 | 0.002 | 2.3 | 1.3–4.0 | 0.003 |
Pooled twice in one MA | 0.3 | 0.2–0.7 | 0.004 | 0.7 | 0.4–1.2 | 0.2 | 0.7 | 0.4–1.3 | 0.2 |
Using raw data in MA | 1.5 | 0.99–2.26 | 0.05 | 1.8 | 1.1–3.0 | 0.03 | 1.2 | 0.8–2.0 | 0.4 |
Meta-analyze both adjusted and unadjusted data | 0.8 | 0.5–1.2 | 0.3 | 0.9 | 0.5–1.5 | 0.7 | 1.0 | 0.6–1.7 | 0.8 |
Combined Pearson and Spearman one meta-analysis | 0.99 | 0.4–2.4 | 0.98 | 1.2 | 0.4–3.3 | 0.7 | 0.7 | 0.2–2.1 | 0.5 |