Table 2.

TC and PPCTP in six continents.

Continent	Mean $\left(\mathit{TC}\right)$	95%CI $\left(\mathit{TC}\right)$	Mean $\left(\mathit{PPCTP}\right)$	95%CI $\left(\mathit{PPCTP}\right)$
Asia	0.8006	[0.7597,0.8416]	7.1082%	[6.8517,7.3646]%
Europe	1.0881	[1.0550,1.1213]	3.4010%	[3.2796,3.5224]%
Oceania	0.8557	[0.7981,0.9534]	0.4799%	[0.3728,0.5870]%
North America	0.5334	[0.5150,0.5717]	15.9961%	[15.1956,16.7966]%
South America	0.3245	[0.2901,0.3590]	17.6341%	[16.1571,19.1112]%
Africa	0.3465	[0.3116,0.3815]	7.0090%	[5.9387,8.0794]%