Table 1. Selected characteristics of the study participants ( n = 342) .
| Variable | n (%) or mean ± SD |
|---|---|
| Gender: female | 172 (50.3) |
| Unstimulated flow rate (g/30 seconds) | 0.139 ± 0.130 |
| Low-USFR (≤ 0.10 g/30 seconds) | 175 (51.2) |
| Stimulated flow Rate (mL/minute) | 1.45 ± 0.86 |
| Low-SSFR (≤ 1.0mL/minute) | 118 (34.5) |
| Serum LDL level (mg/dL) | 115.6 ± 26.2 |
| Moderate hyper-LDL (140–159 mg/dL) | 41 (12.0) |
| Severe hyper-LDL (≥ 160 mg/dL) | 19 (5.6) |
| Serum HDL level (mg/dL) | 59.3 ± 14.5 |
| Hypo-HDL-C (≤ 40 mg/dL) | 25 (7.3) |
| Serum rheumatoid ator (IU/mL) | 9.81 ± 63.6 |
| Rheumatoid arthritis (≥ 15) | 21 (6.1) |
| HbA1C (%) | 5.36 ± 0.69 |
| Diabetes mellitus (HbA1c ≥ 6.5) | 21 (6.1) |
| eGFR (mL/minute/1.73 m 2 ) | 68.4 ± 16.4 |
| Reduced kidney function (< 60) | 102 (29.8) |
| GHQ score | 4.95 ± 5.28 |
| Depression (GHQ score ≥ 7) | 103 (30.1) |
| Antihypertensive agent intake | 157 (45.9) |
| Diuretic agent intake | 17 (5.0) |
| Antidepressant agent intake | 58 (17.0) |
| Anticholinergic agent intake | 18 (5.3) |
| Number of medications | 3.06 ± 3.01 |
| Number of remaining teeth | 15.7 ± 9.2 |
| Body mass index | 21.9 ± 3.07 |
| Current smoker | 30 (8.8) |
Abbreviations: eGFR, estimated glomerular filtration rate; GHQ, General Health Questionnaire; HbA1c, glycated hemoglobin; HDL, high-density lipoprotein; LDL, low-density lipoprotein; SD, standard deviation; SSFR, stimulated salivary flow rate; USFR, unstimulated salivary flow rate.