Table 2.
Laser Fluorescence Readings in Test and Control Groups at Baseline and 3- and 6-mo Follow-up.
| Test Group (n =
31) |
Control Group (n
= 34) |
Treatment Effect |
||||||
|---|---|---|---|---|---|---|---|---|
| Readings | Missing Subjects | Readings | Missing Subjects | Difference (95% CI)a | P Value | Odds Ratio (95% CI)a,b | P Value | |
| Baseline | 45.2 (22.9) | 0 | 33.0 (16.5) | 0 | ||||
| 3 mo | 29.5 (18.8) | 2 | 31.6 (21.0) | 4 | ||||
| 6 mo | 27.2 (19.3) | 1 | 32.6 (24.9) | 2 | ||||
| Baseline vs. | ||||||||
| 3 mo | −14.7 (16.8) | 2 | −2.7 (23.1) | 4 | 9.3 (1.0 to 17.6) | 0.0274 | 2.9 (1.1 to 8.1) | 0.0394 |
| 6 mo | −18.6 (19.8) | 1 | −1.1 (25.8) | 2 | 12.4 (2.8 to 22.0) | 0.0112 | 3.9 (1.3 to 11.6) | 0.0139 |
| 3 and 6 mo | NA | NA | 10.9 (2.3 to 19.4) | 0.0130 | 3.5 (1.3 to 9.8) | 0.0147 | ||
Data for groups are mean (SD).
NA, not applicable.
a
Adjusted for baseline values of laser fluorescence, age, sex, and plaque. For analyses at 3 and 6 mo, estimates were additionally adjusted for time point.
b
Odds ratios are for the control group with the test group as reference.