Table 2.
Effect of Advanced Dental Cleaning on Primary and Secondary Outcomes (MWU Test)
| Intervention | Control | p-value | |
|---|---|---|---|
| N = 45 | N = 56 | ||
| Change in annual exacerbation frequency | |||
| Total population, n = 101 | −1.0 (−3.0–0.0) | 0.0 (−2.0–0.0) | 0.207 |
| Population attending 6-month follow-up, n = 78 | −1.0 (−3.5–0.0) | 0.0 (−1.0–1.0) | 0.039 |
| Change in CAT score | |||
| Population attending 6-month follow-up, n = 70 | −0.71 + 6.44 | 0.39 + 6.07 | 0.467 |
| Change in FEV1%pred | |||
| Total population, n = 55 | −2.42 + 8.87 | −3.39 + 6.07 | 0.649 |
| Population attending 6-month follow-up, n = 40 | −2.19 + 9.43 | −2.32 + 5.20 | 0.958 |
| Change in number of periodontal pockets >5 mm | |||
| Population attending the 6-month follow-up, n = 69 | 0.0 (−1.0–0.5) | 0.0 (−0.75–1.75) | 0.305 |
Notes: Difference between the intervention and control groups in change of annual exacerbation frequency, CAT score, FEV1%pred, and number of periodontal pockets > 5 mm from baseline to 12-month follow-up. Values are presented as mean ± standard deviation or median (interquartile ranges). Analyses performed using t-test or Mann–Whitney-U test.
Abbreviations: CAT, COPD Assessment Test; FEV1%pred, Forced expiratory volume in one second in percentage of predicted value; MWU test, Mann–Whitney-U test.