Table 7.
Number of collaborating countries for each two consecutive years in 2016-2020
| Years | First year | Second year | t-test statistic | p-value | ||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | |||
| 2016-2017 | 13.16 | 13.49 | 14.5 | 15.43 | 0.71 | 0.24 |
| 2017-2018 | 14.5 | 15.43 | 22.32 | 18.54 | 3.63 | 0.0002 |
| 2018-2019 | 22.32 | 18.54 | 30.81 | 24.24 | 3.2 | 0.0007 |
| 2019-2020 | 30.81 | 24.24 | 42.94 | 34.62 | 3.49 | 0.0002 |
| 2019-2020 COVID-19 | 30.81 | 24.24 | 15.39 | 13.97 | 6.13 | -2e-9 |
| 2019-2020 non-COVID-19 | 30.81 | 24.24 | 42.07 | 34.04 | 3.233 | 0.00069 |
Mean, SD, T-Test statistic and p-value. Results in bold are statistically significant