Continuous data are expressed as mean ± standard deviation and categorical data as percentage. Student’s t test and χ2 test were used to compare the differences in continuous and categorical variables, respectively. Poisson regression was used to compare the number of SPECT-MPI test performed during the lockdown and those during the corresponding time interval of the previous 3 years. Multivariable logistic regression analysis for predicting abnormal SPECT-MPI was performed for lockdown period and corresponding period of previous 3 years. Two-tailed P values < 0.05 were considered significant. Statistical analysis was performed with R software version 3.6.3 (R Foundation for Statistical Computing, Vienna, Austria).