Table 5 Comparison of the 50 most-cited versus 50 least-cited reviews a
From: Bibliometrics of systematic reviews: analysis of citation rates and journal impact factors
Characteristics | Top 50 cited | Bottom 50 cited | P-value of difference |
|---|---|---|---|
Number of citations (mean) | 132.0 (SD ±29.7) | 0.6 (SD ±0.5) | <0.000 |
JIF (mean) | 10.5 (SD ±8.89) | 2.3 (SD ±2.3) | <0.000 |
Number of authors (mean) | 6.3 (SD ±6.4) | 3.5 (SD ±2.2) | 0.004 |
Number of pages (mean) | 12.5 (SD ±9.4) | 13.7 (SD ±27.9) | 0.790 |
International collaboration | 24% | 8% | 0.029 |
Published in journals with JIF | 100% | 50% | <0.000 |
Indexed in MEDLINE | 100% | 54% | <0.000 |
Top ICD-10 chapter | 16% ‘Neoplasms’ | 20% ‘Diseases of the respiratory system’ |  |
Top intervention type | 40% ‘Not an intervention’ | 28% ‘Not an intervention’ |  |
Top country location of first author | 48% United States | 34% United Kingdom | Â |