Fig. 1. The data collection process. Fig. 3. Survival data — user time. Correlation matrix. Note: p< 0.01, ** p < 0.05, *p < 0.1. Table 3 Note: Standard deviations are reported in parentheses. Mean statistics for key variables. Table 2 Main research model results. Table 4 the hazard rate given our independent variables. By doing so, we could include our independent variables with the time-vary covariates and estimate the coefficients of the linear combination regression of exponential function. The estimated coefficient 1 resents the relationship between covariate and hazard function, thus providing the main reason why this study needs to use the Haz function.
