CKD Stage	Overall	US
1	21.8%-57.0%	22.7%, 23.5%
2	20.0%-44.4%	20.0%, 23.9%
3	6.3%-40.0%	24.3%, 40.0%
4	1.3%-17.9%	17.9%
5	0.9%-11.2%	11.2%
Abbreviations: CKD, chronic kidney disease; IgAN, immunoglobulin A nephropathy; US, United States