Table 1.
Patient- and tooth-related characteristics of the patients grouped by pulp status.
| Overall n=708 | Non-vital pulp status n=349 | Vital pulp status n=359 | P-value | |
|---|---|---|---|---|
|
| ||||
| Patient-Related Characteristics | ||||
|
| ||||
| Mean [SD]1 age in years | 47.8 [13.0] | 50.5 [13.2] | 45.2 [12.2] | <0 .001 |
| Number missing | 13 | |||
|
| ||||
| Female gender: n (%) | 409 (58.6) | 186 (45.5) | 223 (54.5) | |
| Male gender: n (%) | 289 (41.4) | 159 (55.0) | 130 (45.0) | 0.01 |
| Number missing | 10 | |||
|
| ||||
| Race/ethnicity: n (%) | ||||
| White Non-Hispanic/Latino | 603 (87.5) | 299 (49.6) | 304 (50.4) | 0.35 |
| Other | 86 (12.5) | 38 (44.2) | 48 (55.8) | |
| Number missing | 19 | |||
|
| ||||
| Highest level of education completed: n (%) | ||||
| <College degree | 340 (48.6) | 177 (52.0) | 163 (48.0) | 0.22 |
| College degree or more advanced degree | 359 (51.4) | 169 (47.0) | 190 (53.0) | |
| Number missing | 9 | |||
|
| ||||
| Chronic generalized pain: n (%) | 205 (29.4) | 102 (49.8) | 103 (50.2) | 0.91 |
| No chronic generalized pain: n (%) | 493 (70.6) | 243 (49.3) | 250 (50.7) | |
| Number missing | 10 | |||
|
| ||||
| Expectations of RCT2 outcome: n (%) | ||||
| Very good | 457 (97.7) | 235 (51.4) | 222 (48.6) | 0.15 |
| Fair/good | 247 (2.3) | 113 (45.7) | 134 (54.3) | |
| Number missing | 4 | |||
|
| ||||
| Fearfulness of dental appointment: n (%) | ||||
| A little fear or more | 452 (64.3) | 211 (46.7) | 241 (53.3) | |
| Not at all | 251 (35.7) | 136 (54.2) | 115 (45.8) | 0.06 |
| Number missing | 5 | |||
|
| ||||
| Medications for tooth pain taken: n (%) | 416 (60.2) | 190 (45.7) | 226 (54.3) | 0.01 |
| No medication: n (%) | 275 (39.8) | 152 (55.3) | 123 (44.7) | |
| Number missing | 17 | |||
|
| ||||
| Tooth-Related Characteristics | ||||
|
| ||||
| Maxillary tooth: n (%) | 417 (58.9) | 225 (54.0) | 192 (46.0) | <0.01 |
| Mandibular tooth: n (%) | 291 (41.1) | 124 (42.6) | 167 (57.4) | |
| Number missing | 0 | |||
|
| ||||
| Anterior tooth: n (%) | 77 (10.9) | 55 (71.4) | 22 (28.6) | |
| Posterior tooth: n (%) | 631 (89.1) | 294 (46.6) | 337 (53.4) | <0.001 |
| Molar | 434 (68.8) | 185 (42.6) | 249 (57.4) | |
| Premolar | 197 (31.2) | 109 (55.3) | 88 (44.7) | |
| Number missing | 0 | |||
|
| ||||
| Preoperative tooth pain: | ||||
| ≥1 day with >0 NRS3 pain: (n%) | 506 (73.4) | 221 (43.7) | 285 (56.3) | <0.001 |
| No preoperative pain: n (%) | 183 (26.6) | 119 (65.0) | 64 (35.0) | |
| Number missing | 19 | |||
|
| ||||
| Tooth pain at examination: n (%) | ||||
| None | 248 (35.7) | 147 (59.3) | 101 (40.7) | |
| Mild | 204 (29.4) | 95 (46.6) | 109 (53.4) | <0.001 |
| Moderate | 143 (20.6) | 65 (45.5) | 78 (54.5) | |
| Severe | 100 (14.4) | 36 (36.0) | 64 (64.0) | |
| Number missing | 13 | |||
|
| ||||
| Persistent tooth pain: n (%) | ||||
| Pain ≥8h/day, ≥15 days/month and ≥3 months | 139 (19.9) | 60 (43.2) | 79 (56.8) | 0.10 |
| No persistent tooth pain | 559 (80.1) | 285 (51.0) | 274 (49.0) | |
| Number missing | 10 | |||
1
SD: standard deviation;
2
RCT: root canal treatment;
3
NRS: pain on 0–10 numeric rating scale. P-value from Pearson chi-square test (t-test for mean age). Bold numbers indicate statistically significant differences at the 5% level.