Table 3 Comparison between patients treated before and during the pandemic through independent t test and Mann–Whitney test
From: The impact of COVID-19 pandemic on total treatment time of fixed appliances
Variable | Group | Mean/Median (SD/DIQ) | Difference | CI 95% | p-value | |
|---|---|---|---|---|---|---|
Lower | Upper | |||||
Absences/missed appointments | Before the pandemic | 2.0 (3.0) | − 4.0 | 2.0 | 5.0 | < 0.001* |
During the pandemic | 6.0 (3.7) | |||||
Age T0 (years) | Before the pandemic | 26.0 (25.0) | 11.5 | − 13.0 | 1.0 | 0.2 |
During the pandemic | 14.5 (14.0) | |||||
PAR T0 | Before the pandemic | 17.0 (6.0) | − 1.7 | − 1.3 | 4.9 | 0.2 |
During the pandemic | 18.8 (6.1) | |||||
Debonds/breakages | Before the pandemic | 3.0 (6.0) | 0.0 | − 2.0 | 2.0 | 0.8 |
During the pandemic | 3.0 (8.5) | |||||
Tooth loss | Before the pandemic | 0.0 (0.0) | 0.0 | − 3.8 | 2.2 | 0.7 |
During the pandemic | 0.0 (0.0) | |||||