I'm trying to run a Interrupted time series analysis for single group using the "ITSA" package
Code:
tsset num_days
itsa Total_cases, single trperiod(84) lag(11) posttrend figure replace
actest, lags(12)
The model runs, but my "constant" is a negative number.
I'm not sure how to interpret this, I don't think it should be a negative number, given the data.
Is there an explanation for this?
Array Array
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