*2.4. Statistical Analysis*

Sample characteristics (analytical sample) were first calculated stratified by postponement of dental visits (no; yes). Afterwards, multiple logistic regressions were performed to identify determinants of postponed dental visits due to the COVID-19 pandemic. In further analysis, we used a multinomial logistic regression (with "Yes, postponed dental visits" as the base outcome). Statistical significance was set at *p* < 0.05. *p* values between 0.05 and 0.10 were considered as marginally significant. Statistical analyses were performed using Stata 16.0 (Stata Corp., College Station, TX, USA).

#### **3. Results**

#### *3.1. Sample Characteristics*

Sample characteristics for our analytical sample (*n* = 974) are shown in Table 1. In the total sample, the average age equaled 45.9 years (SD: 16.5, from 18 to 74 years) with 51.1% of individuals being female. Postponed dental visits were associated with being female, age category, and affect regarding COVID-19. Further details are shown in Table 1.


**Table 1.** Sample characteristics for the analytical sample (*n* = 974 individuals) at wave 17.


In sum, 22% of participants reported to have postponed dental visits due to the COVID-19 pandemic since March 2020, 78% did not report postponed visits ("no, attended as planned: 29.2%; "no, examining pending": 44.9%; "no, other reasons": 3.9%), as shown in Figure 1. Of the individuals who reported postponed dental visits, 72% postponed a "check-up/regular dental examination", whereas 8.4% postponed a dental visit despite "pain/dental complaints" and 19.6% postponed "planned therapy" (Figure 2).

**Figure 1.** Postponed dental visits.
