Table 9.

Number of papers published by a single country and multiple countries for each two consecutive years in 2016–2020, ${\chi }^2$ statistic and p-value

Years	First year		Second year		${\chi }^2$ statistic	p-value
	Single Country	Multi Country	Single Country	Multi Country
2016-2017	582	909	616	954	0.006	0.94
2017-2018	616	954	708	1232	2.66	0.1
2018-2019	708	1232	854	1602	1.33	0.25
2019-2020	854	1602	1756	3260	0.03	0.96
2019-2020 COVID-19	854	1602	681	870	33.18	8.38e-9
2019-2020 non-COVID-19	854	1602	1077	2394	9	0.003

Results in bold are statistically significant