Table 1. Countries and Populations.

	Total No. of Countries Recognized by UN	Total Population in All UN-Recognized Countries, in Millions	Total No. of Countries Receiving Survey	Total Population in Countries Receiving Survey, in Millions	No. (%) of Countries Completing Surveya	Total Population in Countries Completing Survey, in Millions	% of Population in Countries Receiving Surveyb	% of Population in all UN-Recognized Countriesc
Overall	200	7248	130	6778	125 (96)	6754	99.6	93
ISN regions
Africa	54	1156	37	969	35 (95)	964	99	83
Middle East	14	225	13	223	13 (100)	223	100	99
Latin America	25	608	18	571	17 (94)	560	98	92
North and East Asia	7	1602	6	1577	6 (100)	1577	100	98
South Asia	8	1707	5	1673	5 (100)	1673	100	98
OSEA	25	671	13	661	13 (100)	661	100	99
East and Central Europe	20	209	19	207	17 (89)	199	96	95
NIS and Russia	11	281	6	223	6 (100)	223	100	79
Western Europe	22	429	11	318	11 (100)	318	100	74
North America	14	362	2	356	2 (100)	356	100	398
World Bank income groups
Low	31	631	18	405	18 (100)	405	100	64
Lower middle	52	2862	35	2789	34 (97)	2786	99.9	97
Upper middle	53	2370	35	2313	32 (91)	2293	99	97
High	63	1386	41	1271	40 (98)	1270	99.9	92
Not classified	1	0.02	1	0.02	1 (100)	0.02	100	100

Abbreviations: ISN, International Society of Nephrology; NIS, newly independent states; OSEA, Oceania and South East Asia; UN, United Nations.

^aThe percentage was calculated as total No. of countries that completed the survey/total No. of countries that received the survey.

^bThe proportion was calculated as total population for countries that completed the survey/total population for countries that received the survey.

^cThe proportion was calculated as total population for countries that completed the survey/total population in all UN-recognized countries.