Fig. 1

Statistical power under three intervention scenarios. UB-corrected: unbiased correction; MSRC: maximum significant ρ correction. The different colored bands indicate estimation methods. Panel (A) \({\sigma }_{\alpha }^{2}=0.5\); and Panel (B) \({\sigma }_{\alpha }^{2}=1\), and from left to right for the scenarios of level change (\(\varvec{\beta }={\left(\text{1,1},\text{0.4,0}\right)}^{T}\)), trend change (\({\varvec{\beta }=\left(\text{1,1},\text{0,1.2}\right)}^{T}\)), and both level and trend change (\({\varvec{\beta }=\left(\text{1,1},\text{0.4,1.2}\right)}^{T}\))