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Quadratic growth model with ZIP varia... |
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I want to contruct a quadratic growth model with ZIP variables. Have I got the model specified correctly? If so, do you have any suggestions for how I can avoid the fatal error of insufficient memory? _________________________ TITLE: SAFETALK transmission risk perception longitudinal analysis - no mediation quadratic growth model with zero inflated poisson vars, with uavi < 130 DATA: FILE IS safetalk063010LongMed.dat; VARIABLE: NAMES ARE arm numUAVI1 numUAVI2 numUAVI3 numUAVI4; USEVARIABLES ARE arm numUAVI1 numUAVI2 numUAVI3 numUAVI4; USEOBSERVATIONS ARE (numUAVI1 < 130) and (numUAVI2 < 130) and (numUAVI3 < 130) and (numUAVI4 < 130); COUNT ARE numUAVI1-numUAVI4 (i); MISSING ARE ALL (999); MODEL: [numUAVI1 numUAVI2 numUAVI3 numUAVI4] (1); intY slpY quadY | numUAVI1@0 numUAVI2@1 numUAVI3@2 numUAVI4@3; intYi slpYi quadYi | numUAVI1#1@0 numUAVI2#1@1 numUAVI3#1@2 numUAVI4#1@3; intY slpY quadY intYi slpYi quadYi on arm; intY with slpY* quadY*; slpY with quadY*; intYi with slpYi* quadYi*; slpYi with quadYi*; OUTPUT: TECH1 TECH8; |
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I would suggest using INTEGRATION = 7; in the ANALYSIS command and asking for SVALUES in the OUTPUT command. Once you have the starting values, you can rerun with the default INTEGRATION = 15; to check for stability. |
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