Table 2.
The prevalence of nephrolithiasis in people with different characteristics and the results of univariate binary logistic regression analysis
| Variables | Group | n(N) | Nephrolithiasis | OR (95%CI) | |
|---|---|---|---|---|---|
| Prevalence | 95%CI | ||||
| Age, years | ≤ 44 | 530(4735) | 11.19 | (10.29,12.09) | Ref |
| 45–59 | 1445(11362) | 12.72 | (12.11,13.33) | 1.156(1.040,1.285) | |
| ≥ 60 | 703(6006) | 11.70 | (10.89,12.51) | 1.052(0.933,1.186) | |
| Gender | Male | 1122(7141) | 15.71 | (14.87,16.55) | Ref |
| Female | 1556(14962) | 10.40 | (9.91,10.89) | 0.623(0.573,0.676) | |
| Ethnic Groups | Han nationality | 957(10,059) | 9.51 | (8.94,10.08) | Ref |
| Yi nationality | 902(5929) | 15.21 | (14.3,16.12) | 1.707(1.548,1.881) | |
| Bai nationality | 819(6115) | 13.39 | (12.54,14.24) | 1.471(1.332,1.624) | |
| Household registration | Rural | 2481(20518) | 12.09 | (11.64,12.54) | Ref |
| Urban | 167(1315) | 12.70 | (10.90,14.50) | 1.058(0.894,1.251) | |
| Unified | 24(239) | 10.04 | (6.23,13.85) | 0.812(0.531,1.240) | |
| Annual household income, ¥ | < 1200 | 581(4598) | 12.64 | (11.68,13.60) | Ref |
| 12000–19999 | 611(5182) | 11.79 | (10.91,12.67) | 0.924(0.819,1.043) | |
| 20000–59999 | 1096(9185) | 11.93 | (11.27,12.59) | 0.937(0.841,1.043) | |
| 60000–99999 | 219(1786) | 12.26 | (10.74,13.78) | 0.966(0.818,1.141) | |
| 100000–199999 | 122(1057) | 11.54 | (9.61,13.47) | 0.902(0.733,1.110) | |
| ≥ 200000 | 41(262) | 15.65 | (11.25,20.05) | 1.283(0.909,1.810) | |
| Educational level | No formal | 739(6472) | 11.42 | (10.65,12.19) | Ref |
| Primary school | 1047(8640) | 12.12 | (11.43,12.81) | 1.070(0.968,1.182) | |
| Junior high school | 696(5378) | 12.94 | (12.04,13.84) | 1.153(1.033,1.288) | |
| High school | 126(1053) | 11.97 | (10.01,13.93) | 1.054(0.862,1.290) | |
| College or above | 70(559) | 12.52 | (9.78,15.26) | 1.111(0.855,1.443) | |
| Smoking status | Never | 1874(16951) | 11.06 | (10.59,11.53) | Ref |
| Current | 690(4478) | 15.41 | (14.35,16.47) | 1.465(1.334,1.610) | |
| Former | 114(672) | 16.96 | (14.12,19.8) | 1.644(1.336,2.022) | |
| Drinking frequency | Never | 1898(16378) | 11.59 | (11.10,12.08) | Ref |
| Occasionally | 482(3363) | 14.33 | (13.15,15.51) | 1.276(1.146,1.421) | |
| 1–2 days/week | 33(290) | 11.38 | (7.72,15.04) | 0.980(0.680,1.412) | |
| 3–5 days/week | 40(247) | 16.19 | (11.60,20.78) | 1.474(1.047,2.075) | |
| Everyday | 223(1812) | 12.31 | (10.80,13.82) | 1.071(0.923,1.242) | |
| Tea Drinking status | Never | 1791(14867) | 12.05 | (11.53,12.57) | Ref |
| 1–2 days/week | 59(679) | 8.69 | (6.57,10.81) | 0.695(0.530,0.912) | |
| 3–5 days/week | 66(490) | 13.47 | (10.45,16.49) | 1.136(0.873,1.480) | |
| Everyday | 746(5980) | 12.47 | (11.63,13.31) | 1.041(0.950,1.140) | |
| Habit of napping | No | 2033(16671) | 12.19 | (11.69,12.69) | Ref |
| Yes | 609(5211) | 11.69 | (10.82,12.56) | 0.953(0.865,1.049) | |
| BMI, kg/m2 | < 18.5 | 162(1552) | 10.44 | (8.92,11.96) | Ref |
| 18.5–24.9 | 1765(14731) | 11.98 | (11.46,12.50) | 1.168(0.985,1.385) | |
| ≥ 25 | 712(5565) | 12.79 | (11.91,13.67) | 1.259(1.051,1.508) | |
| FBG, mg/dL | - | - | - | - | 1.049(1.020,1.078) |
| Hypertension | No | 1619(14688) | 11.02 | (10.51,11.53) | Ref |
| Yes | 1059(7415) | 14.28 | (13.48,15.08) | 1.345(1.238,1.461) | |
| Diabetes | No | 2402(20112) | 11.94 | (11.49,12.39) | Ref |
| Yes | 276(1991) | 13.86 | (12.34,15.38) | 1.187(1.038,1.357) | |
| Hyperlipidemia | No | 1680(14869) | 11.30 | (10.79,11.81) | Ref |
| Yes | 998(7234) | 13.80 | (13.01,14.59) | 1.256(1.155,1.366) | |
| Fatty Liver | No | 2091(17751) | 11.78 | (11.31,12.25) | Ref |
| Yes | 587(4352) | 13.49 | (12.48,14.50) | 1.168(1.058,1.288) | |
| Hyperuricemia | No | 2139(18908) | 11.31 | (10.86,11.76) | Ref |
| Yes | 539(3195) | 16.87 | (15.57,18.17) | 1.591(1.435,1.763) | |
| Scra, µmol/L | - | 80.50 ± 22.59 | - | - | 1.010(0.997,1.023) |
| Ureaa, mmol/L | - | 5.27 ± 1.58 | - | - | 1.036(0.983,1.089) |
aSerum creatinine and urea are numerical variables and are described as ; Scr: Serum Creatinine