From: Estimating the risk of SARS-CoV-2 deaths using a Markov switching-volatility model combined with heavy-tailed distributions for South Africa
Test
Trend
Intercept
Intercept and trend
Zivot-Andrews Unit Root test
< 0.001
Potential breakpoint
431
316
319
04–06-2021
09–02-2021
12–02-2021