TABLE II.
Publication Statistics.
| Variable | COVID † Publications, n (%) | Non‐COVID † Publications, n (%) | Pre‐COVID † Publications, n (%) | P |
|---|---|---|---|---|
| Among all publications | n = 759 | n = 4,885 | n = 4,200 | |
| Publication type | <.001* | |||
| Meta‐analysis/reviews | 130 (17.1) | 352 (7.2) | 363 (8.6) | |
| Randomized control trials | 2 (0.3) | 73 (1.5) | 137 (3.3) | |
| Observational/cohort/other studies | 438 (57.7) | 3,880 (79.4) | 3,150 (75.0) | |
| Case studies | 27 (3.6) | 155 (3.2) | 206 (4.9) | |
| Miscellaneous | 162 (21.3) | 425 (8.7) | 344 (8.2) | |
| Top 5 countries by most COVID articles | <.001* | |||
| United States | 220 (29.0) | 1,133 (23.2) | 653 (15.5) | |
| Italy | 89 (11.7) | 181 (3.7) | 153 (3.6) | |
| France | 25 (3.3) | 99 (2.0) | 97 (2.3) | |
| India | 24 (3.2) | 124 (2.5) | 70 (1.7) | |
| Canada | 21 (2.8) | 161 (3.3) | 161 (3.8) | |
| Others | 380 (50.0) | 3,187 (65.2) | 3,066 (73.0) | |
| h5‐index of journal (mean ± SD) | 40.7 ± 8.5 | 39.7 ± 9.1 | 39.0 ± 9.2 | <.001* |
| Altmetric Attention Score (mean ± SD) | ||||
| Total score | 24.9 ± 173.2 | 2.0 ± 18.2 | 2.9 ± 26.5 | <.001* |
| Score 3 mo after publication | 2.1 ± 14.9 | 0.6 ± 15.7 | 0.1 ± 1.0 | <.001* |
| Score 6 mo after publication | 5.0 ± 23.1 | 1.2 ± 17.0 | 0.2 ± 1.5 | <.001* |
| Social media posts | 21.0 ± 211.5 | 2.3 ± 6.5 | 3.2 ± 10.8 | <.001* |
| Among top 100 most cited publications | n = 100 | n = 100 | n = 100 | |
| Publication type | .020* | |||
| Meta‐analysis/reviews | 25 | 21 | 25 | |
| Randomized control trials | 1 | 3 | 6 | |
| Observation/cohort/other studies | 61 | 73 | 65 | |
| Case studies | 0 | 1 | 0 | |
| Miscellaneous | 13 | 2 | 4 | |
| Top 5 countries by most COVID articles | <.001* | |||
| United States | 28 | 17 | 14 | |
| Italy | 25 | 8 | 8 | |
| France | 6 | 1 | 2 | |
| India | 0 | 0 | 0 | |
| Canada | 3 | 6 | 4 | |
| Others | 38 | 68 | 72 | |
| h5‐index of journal (mean ± SD) | 42.7 ± 6.8 | 43.1 ± 6.9 | 42.4 ± 7.5 | .777 |
| Altmetric Attention Score (mean ± SD) | ||||
| Total score | 87.7 ± 255.7 | 9.0 ± 37.9 | 17.5 ± 52.0 | <.001* |
| Score 3 mo after publication | 3.7 ± 19.1 | 2.0 ± 12.8 | 1.1 ± 5.6 | .396 |
| Score 6 mo after publication | 10.5 ± 38.8 | 5.8 ± 36.8 | 1.5 ± 6.2 | .124 |
| Social media posts | 48.8 ± 135.7 | 6.0 ± 13.3 | 14.8 ± 31.2 | <.001* |
*
P < .05.
†
COVID publications refers to publications queried from April 1, 2020–March 31, 2021 regarding COVID‐19. Non‐COVID refers to publications during the COVID time period (April 1, 2020–March 31, 2021) that are unrelated to COVID‐19. Pre‐COVID refers to publications unrelated to COVID in the 1 year period before COVID (April 1, 2019–March 31, 2020).
SD = standard deviation.