Table 5.
Assessing the impact of publication variables on citation scores and altmetric scores using multivariate analysis
| Category (n) | Citation scores | Altmetric scores | P value | ||
| Mean±SD | 95% CI | Mean±SD | 95% CI | ||
| Authors: four or more (6) | 228.5±186.4 | 86.5 to 370.5 | 2.5±4.8 | −41.2 to 46.2* | 0.762 |
| Authors: 2–3 (16) | 161.7±211.2 | 74.7 to 248.6 | 9.9±16.3 | 16.8 to 36.6 | 0.802 |
| One author (28) | 166.5±144.3 | 100.8 to 232.3 | 33.6±69.1 | 13.4 to 53.9 | 0.803 |
| Institutes: 3 or more (18) | 200.3±219.2 | 118.7 to 281.9 | 6.0±7.4 | 19.3 to 31.3 | 0.563 |
| Two institutes (12) | 131.2±46.6 | 31.2 to 231.1 | 34.2±97.6 | 3.2 to 65.2 | 0.272 |
| One institute (20) | 172.0±170.4 | 94.6 to 249.5 | 29.8±38.5 | 5.8 to 53.8 | 0.541 |
| Countries: 2 or more (40) | 169.8±158.9 | 115.1 to 224.6 | 21.8±55.7 | 4.6 to 39.1 | 0.411 |
| One country (10) | 182.7±221.0 | 73.1 to 292.3 | 24.1±47.3 | 10.4 to 58.6 | 0.808 |
| Female authors: 2 or more (10) | 263.6±281.9 | 157.1 to 370.1 | 6.4±8.0 | −27.6 to 40.4 | 0.151 |
| One female author (14) | 166.8±187.7 | 76.8 to 256.8 | 12.4±20.6 | −16.4 to 41.1* | 0.286 |
| No female author (26) | 140.4±75.6 | 74.3 to 206.4 | 33.8±71.5 | 12.7 to 54.8* | 0.334 |
| Grants: 2 or more (30) | 197.5±213.1 | 134.6 to 260.4 | 10.7±16.4 | 8.4 to 29.9 | 0.451 |
| One grant (15) | 36.7±60.4 | 47.7 to 225.7 | 34.7±86.9 | 7.4 to 61.9 | 0.132 |
| No grants (5) | 128.8±53.7 | 25.3 to 282.9 | 55.0–63.3 | 7.7 to 102.3 | 0.394 |
None of the categories studied caused significant differences on the citation scores or the altmetric scores.
*The analysis involved subgroups, smaller sample size, and because the smaller altmetric scores for these subgroups, the CI was negative.