Table 1. Baseline demographic, clinical, and laboratory characteristics of the 19 study participants.
| Variables | SIa (n=10) | Control (n=9) | P value |
|---|---|---|---|
| Age at recruitment (years), median (IQR) | 56 (38.0-63.0) | 57 (47.0-59.0) | .68 |
| Gender, n (%) | >.99 | ||
| Women | 7 (70) | 6 (67) | |
| Men | 3 (30) | 3 (33) | |
| Employment status, n (%) | .72 | ||
| Full-time | 5 (50) | 3 (33) | |
| Part-time | 2 (20) | 3 (33) | |
| Else | 3 (30) | 3 (33) | |
| Education, n (%) | .37 | ||
| College or above | 4 (40) | 1 (11) | |
| Else | 6 (60) | 8 (89) | |
| BMI category, n (%) | .93 | ||
| Underweight or normal (<25 kg/m2) | 2 (20) | 2 (22) | |
| Overweight (25‐29.9 kg/m2) | 3 (30) | 2 (22) | |
| Obese (≥30 kg/m2) | 5 (50) | 5 (56) | |
| Smoking, n (%) | >.99 | ||
| Previous or current smoker | 2 (20) | 2 (22) | |
| No | 8 (80) | 7 (78) | |
| Comorbidities, n (%) | |||
| Arterial hypertension | 4 (40) | 4 (44) | >.99 |
| Chronic pain syndrome | 4 (40) | 8 (89) | .08 |
| Depression | 2 (20) | 2 (22) | >.99 |
| Prior history, n (%) | |||
| Had hospitalization within 1 year | 2 (20) | 0 (0) | .50 |
| Had operation within 1 year | 2 (20) | 0 (0) | .50 |
| Oral health, n (%) | |||
| Fasted more than 2 hours | 4 (40) | 7 (78) | .23 |
| No brushing teeth within 2 hours | 10 (100) | 9 (100) | N/Ab |
| No chewing gum within 2 hours | 10 (100) | 9 (100) | N/A |
| No smoking within 2 hours | 8 (80) | 9 (100) | .50 |
| No drinking within 24 hours | 9 (90) | 9 (100) | >.99 |
| No bleeding gums within 24 hours | 10 (100) | 9 (100) | N/A |
| No current oral diseases | 7 (70) | 8 (89) | .66 |
| Laboratory parameters, median (IQR) | |||
| Serum creatinine (mmol/L) | 81.0 (74.3-96.3) | 75.0 (67.0-89.0) | .46 |
| Serum albumin (g/L) | 39.5 (38.0-40.0) | 44.0 (41.0-44.0) | .003 |
| Serum total protein (g/L) | 70.5 (67.3-74.0) | 72.0 (69.0-74.0) | .62 |
| Urine creatinine (mmol/L) | 4.3 (3.4-5.5) | 5.9 (4.5-11.4) | .12 |
| Urine albumin/creatinine ratio (mg/mmol) | 0.84 (0.58-1.53) | 1.02 (0.67-2.45) | .41 |
| Urine total protein/creatinine ratio (g/mmol) | 10.74 (8.59-14.73) | 8.91 (7.17-14.08) | .81 |
a
SI: systemic inflammation.
b
N/A: not applicable.