Table 4.
Comparison of oral health between the risk and control groups before and after propensity score matching in the elderly (age ≥ 65 years)
| Variables | Unadjusted data | Propensity-matched data | ||||
|---|---|---|---|---|---|---|
| Control (n = 758), n (%) | At risk (n = 1933), n (%) | p | Control (n = 715), n (%) | At risk (n = 715), n (%) | p | |
| Chewing problem | ||||||
| No | 486 (64.5) | 1125 (60.0) | .061 | 461 (65.2) | 423 (59.4) | .039 |
| Yes | 272 (35.5) | 808 (40.0) | 254 (34.8) | 292 (40.6) | ||
| Speaking problem | ||||||
| No | 654 (87.1) | 1580 (82.5) | .014 | 615 (86.8) | 583 (81.3) | .013 |
| Yes | 104 (12.9) | 353 (17.5) | 100 (13.2) | 132 (18.7) | ||
| Use of oral hygiene supplies | ||||||
| No | 461 (60.8) | 1259 (64.9) | .071 | 435 (61.1) | 442 (60.5) | .840 |
| Yes | 297 (39.2) | 674 (35.1) | 280 (38.9) | 273 (39.5) | ||
| Oral examination in the last 1 year | ||||||
| No | 543 (69.5) | 1418 (73.2) | .115 | 509 (69.4) | 519 (73.3) | .174 |
| Yes | 215 (30.5) | 515 (26.8) | 206 (30.6) | 196 (26.7) | ||
| Tooth brushing per day | ||||||
| < 3 times | 447 (56.9) | 1228 (62.7) | .014 | 418 (56.3) | 439 (60.6) | .150 |
| ≥ 3 times | 311 (43.1) | 705 (37.3) | 297 (43.7) | 276 (39.4) | ||
| Preventive dental treatmenta | ||||||
| No | 525 (67.0) | 1389 (71.1) | .066 | 493 (66.9) | 502 (70.3) | .222 |
| Yes | 233 (33.0) | 544 (28.9) | 222 (33.1) | 213 (29.7) | ||
| Dental hospital use | ||||||
| No | 305 (38.8) | 731 (39.0) | .925 | 286 (38.8) | 272 (39.2) | .901 |
| Yes | 453 (61.2) | 1202 (61.0) | 429 (61.2) | 443 (60.8) | ||
| Simple dental treatmenta | ||||||
| No | 664 (86.3) | 1726 (89.8) | .038 | 631 (87.1) | 634 (89.6) | .211 |
| Yes | 94 (13.7) | 207 (10.2) | 84 (12.9) | 81 (10.4) | ||
| Dental nerve treatmenta | ||||||
| No | 623 (81.4) | 1622 (83.7) | .218 | 590 (82.1) | 602 (84.0) | .366 |
| Yes | 135 (18.6) | 311 (16.3) | 125 (17.9) | 113 (16.0) | ||
| Gingival disease treatmenta | ||||||
| No | 625 (81.3) | 1572 (81.7) | .855 | 590 (81.5) | 570 (79.3) | .346 |
| Yes | 133 (18.7) | 361 (18.3) | 125 (18.5) | 145 (20.7) | ||
| Tooth extraction or oral surgerya | ||||||
| No | 653 (85.0) | 1631 (84.6) | .793 | 620 (85.9) | 589 (82.3) | .099 |
| Yes | 105 (15.0) | 302 (15.4) | 95 (14.1) | 126 (17.7) | ||
| Number of remaining teeth | ||||||
| < 20 | 345 (43.7) | 958 (50.1) | .012 | 331 (44.3) | 342 (49.2) | .097 |
| ≥ 20 | 413 (56.3) | 975 (49.9) | 384 (55.7) | 373 (50.8) | ||
| Permanent dental caries patients | ||||||
| No | 556 (73.8) | 1435 (75.4) | .439 | 524 (73.8) | 534 (75.7) | .456 |
| Yes | 202 (26.2) | 498 (24.6) | 191 (26.2) | 181 (24.3) | ||
| Prevalence of periodontal disease | ||||||
| No | 417 (54.9) | 992 (51.8) | .239 | 392 (54.7) | 359 (51.2) | .251 |
| Yes | 341 (45.1) | 941 (48.2) | 323 (45.3) | 356 (48.8) | ||
aResponses were based on experience within the previous year