Table 1.
General characteristics of the participants
| Characteristics | Participants | ||
|---|---|---|---|
| Sialolithiasis (n, %) | Control (n, %) | P-value | |
| Age (years) | 1.000 | ||
| 40–44 | 36 (3.8) | 144 (3.8) | |
| 45–49 | 135 (14.3) | 540 (14.3) | |
| 50–54 | 215 (22.7) | 860 (22.7) | |
| 55–59 | 172 (18.2) | 688 (18.2) | |
| 60–64 | 144 (15.2) | 576 (15.2) | |
| 65–69 | 102 (10.8) | 408 (10.8) | |
| 70–74 | 88 (9.3) | 352 (9.3) | |
| 75–79 | 33 (3.5) | 132 (3.5) | |
| 80–84 | 19 (2.0) | 76 (2.0) | |
| 85+ | 3 (0.3) | 12 (0.3) | |
| Sex | 1.000 | ||
| Male | 493 (52.1) | 1972 (52.1) | |
| Female | 454 (47.9) | 1816 (47.9) | |
| Income | 1.000 | ||
| 1 (lowest) | 130 (13.7) | 520 (13.7) | |
| 2 | 100 (10.6) | 400 (10.6) | |
| 3 | 128 (13.5) | 512 (13.5) | |
| 4 | 222 (23.4) | 888 (23.4) | |
| 5 (highest) | 367 (38.8) | 1468 (38.8) | |
| Region of residence | 1.000 | ||
| Urban | 408 (43.1) | 1632 (43.1) | |
| Rural | 539 (56.9) | 2156 (56.9) | |
| Hypertension | 290 (30.6) | 1160 (30.6) | 1.000 |
| Diabetes | 117 (12.4) | 468 (12.4) | 1.000 |
| Dyslipidemia | 105 (11.1) | 420 (11.1) | 1.000 |
| Obesity (BMI, kg/m2) | 0.100 | ||
| < 18.5 | 13 (1.4) | 92 (2.4) | |
| ≥ 18.5 to < 23 | 314 (33.2) | 1272 (33.6) | |
| ≥ 23 to < 25 | 280 (29.6) | 1051 (27.7) | |
| ≥ 25 to < 30 | 299 (31.6) | 1250 (33.0) | |
| ≥ 30 | 41 (4.3) | 123 (3.2) | |
| Smoking | 0.047* | ||
| Nonsmoker | 640 (67.6) | 2685 (70.9) | |
| Past or current smoker | 307 (32.4) | 1103 (29.1) | |
| Alcohol consumption | 0.334 | ||
| < 1 time per week | 717 (75.7) | 2810 (74.2) | |
| ≥ 1 time per week | 230 (24.3) | 978 (25.8) | |
BMI: body mass index, kg/m2
*Chi-square test. Significance at P < 0.05