Table 1 Distribution of stone types in five regions of China
Stone type/regions | Calcium oxalate | Calcium phosphate | Uric acid | Calcium oxalate-calcium phosphate mixed | Other types | Total |
|---|---|---|---|---|---|---|
Northern | 485 (57.5%) | 42 (5.0%) | 52 (6.2%) | 183 (21.7%) | 82 (9.7%) | 844 (100%) |
Eastern | 1360 (63.3%) | 121 (5.6%) | 123 (5.7%) | 490 (22.8%) | 55 (2.6%) | 2149 (100%) |
Central | 377 (52.9%) | 36 (5.0%) | 98 (13.7%) | 177 (24.8%) | 25 (3.5%) | 713 (100%) |
Southern | 3317 (51.6%) | 359 (5.6%) | 1242 (19.3%) | 1221 (19.0%) | 284 (4.4%) | 6423 (100%) |
Southwest | 698 (67.9%) | 48 (4.7%) | 60 (5.8%) | 188 (18.3%) | 34 (3.3%) | 1028 (100%) |
Total | 6237 (55.9%) | 606 (5.4%) | 1575 (14.1%) | 2259 (20.2%) | 480 (4.3%) | 11,157 (100%) |