Joinpoint Regression Sas. Second, the test from the joinpoint software is replicated in sas using its proc reg procedure and additional sas programming. Coefficients a named vector of coefficients and standard errors jp the estimates of the join points converged convergence status

Second, the test from the joinpoint software is replicated in sas using its proc reg procedure and additional sas programming. Using sas/stat to understand the nci joinpoint regression software: Has anyone used this and has sample code to help me along?

Miguel RUIZRAMOS Servicio Andaluz de Salud, Sevilla SAS Servicio

But the idea is to include in your model a common slope for both segments and a difference in slope that. A comparison between a sas macro application and an existing software tool (joinpoint software) was conducted to identify the most efficient software application to do a segmented regression for doing an interrupted time series (its) analysis for. But the idea is to include in your model a common slope for both segments and a difference in slope that. Y = α+ β 1 t+ β 2 x + β 3 xt+ β 4 z + β 5 zt + β 6 zx + β 7 zxt + ε where z = treatment or control, zt= time for treatment and 0 for control, zx= study phase for treatment and 0 for control, zxt= time after interruption for treatment and 0 for control year rate t x tx z zt zx ztx 2001 31.67 1 0 0 1.