Table 3 Level- and slope-change point estimates with 95% confidence intervals (CIs), p-values and estimate of magnitude of lag-1 autocorrelation (\( {\hat{\boldsymbol{\uprho}}}_{\mathbf{est}} \)) from C difficile infection data using a range of statistical methods. Abbreviations: ARIMA, autoregressive integrated moving average; OLS, ordinary least squares; NW, Newey-West; PW, Prais-Winsten; REML, restricted maximum likelihood; Satt, Satterthwaite
| Â | Level change | Â | Slope change | Â | \( {\hat{\boldsymbol{\rho}}}_{\boldsymbol{est}} \) |
|---|---|---|---|---|---|
| Â | Estimate (CI) | p-value | Estimate (CI) | p-value | Â |
ARIMA | −0.42 (−0.89,0.05) | 0.079 | −0.03 (− 0.11,0.06) | 0.531 | 0.07 |
OLS | −0.44 (− 0.76,-0.13) | 0.008 | − 0.03 (− 0.07,0.02) | 0.201 | N/A |
NW | −0.44 (− 0.71,-0.17) | 0.002 | −0.03 (− 0.06,0.00) | 0.069 | N/A |
PW | −0.42 (− 0.75,-0.09) | 0.014 | − 0.03 (− 0.08,0.02) | 0.251 | 0.07 |
REML | −0.37 (− 0.72,-0.01) | 0.044 | −0.02 (− 0.08,0.03) | 0.390 | 0.23 |
REML-Satt | −0.37 (− 0.82,0.09) | 0.095 | − 0.02 (− 0.10,0.05) | 0.437 | N/A |