Table 1.
Baseline characteristics of the population included in the National Health Insurance Service-Health Examinee Cohort (NHIS-HEC) according to prostate cancer (PC) patients with/without periodontal disease (PD).
| Characteristics | PD (n, %) | Non-PD (n, %) | Pa |
|---|---|---|---|
| Total | 531 | 403 | |
| Age group (years) | |||
| 40-49 | 48 (9.0) | 45 (11.2) | <0.001 |
| 50-59 | 139 (26.2) | 98 (24.3) | |
| 60-69 | 246 (46.3) | 152 (37.7) | |
| ≥70 | 98 (18.5) | 108 (26.8) | |
| Household incomeb | |||
| First quintile | 49 (9.2) | 70 (17.4) | <0.001 |
| Second quintile | 66 (12.4) | 56 (13.9) | |
| Third quintile | 87 (16.4) | 68 (16.9) | |
| Fourth quintile | 110 (20.7) | 67 (16.6) | |
| Fifth quintile | 219 (41.3) | 142 (35.2) | |
| Insurance status | |||
| MAP | 4 (0.8) | 3 (0.7) | <0.001 |
| NHIS (self-employed) | 293 (55.2) | 206 (51.1) | |
| NHIS (employees) | 234 (44.0) | 194 (48.2) | |
| Residence areac | |||
| Urban | 466 (87.8) | 316 (78.4) | <0.001 |
| Rural | 65 (12.2) | 87 (21.6) |
Abbreviations: MAP: Medical Aid Program.
aP values were calculated using the chi-square test; boldface denotes statistical significance (P < 0.05).
bDivided into five quintiles based on the insurance fee imposed on each household, with the MAP group classed into the first quintile.
cClassified with a cutoff of 50,000 residents.