Comparison of six statistical methods for interrupted time series studies: empirical evaluation of 190 published series

Table 1 Statistical methods, adjustments for autocorrelation and abbreviations used

Statistical method	Autocorrelation adjustment	Abbreviation
Ordinary least squares	None	OLS
Ordinary least squares	Newey-West standard error adjustment with lag-1 autocorrelation	NW
Generalised least squares	Prais-Winsten	PW
Restricted maximum likelihood	Lag-1 autocorrelation model	REML
Restricted maximum likelihood	Lag-1 autocorrelation model with small sample Satterthwaite approximation	REML-Satt
Autoregressive integrated moving average	Lag-1 autocorrelation model (i.e. ARIMA(1,0,0))	ARIMA

ISSN: 1471-2288