| ITS | Interrupted Time Series |
| SKRS | Health Coding Reference Server (Sağlık Kodlama Referans Sunucusu) |
| ATS | Vaccine Tracking System (Aşı Takip Sistemi) |
| SEGE-2022 | 2022 Socioeconomic Development Ranking of Districts |
| FHC | Family Health Center |
| Td | Tetanus-Diphtheria |
| MMR | Measles-Mumps-Rubella |
| IRR | Incidence Rate Ratio |
| CI | Confidence Interval |
| HAC | Heteroskedasticity and Autocorrelation Consistent |
| D1, D2 | Level change at pandemic onset (D1) and end (D2) |
| Tpan, Tpost | Slope change during the pandemic (Tpan) and post-pandemic (Tpost) periods |
| WHO | World Health Organization |