help for ^mlogpred^                                        (statalist: 17sep199
> 8)

Predicted probabilities after ^mlogit^ and ^svymlog^ -------------------------------------------------

^mlogpred^ varname1 [varname2] [^if^ exp] [^in^ range] [^,^ { ^p^rob | ^se^ > | ^ci^ } { ^e^quation^(^#^)^ | ^o^utcome^(^#^)^ } ^l^ev > el^(^#^)^ ]

^mlogpred^ works after ^mlogit^ and ^svymlog^.

Description ------------

^mlogpred^ computes predicted probabilities, standard errors of predicted probabilities, and confidence intervals for predicted probabilities after ^mlogit^ and ^svymlog^.

Options --------

^prob^ requests that predicted probabilities be placed in varname1. If none of ^prob^, ^se^, or ^ci^ is specified, then ^prob^ is the default.

^se^ requests that standard errors of predicted probabilities be placed in varname1.

^ci^ requests that confidence intervals of predicted probabilities be computed. The lower bound of the confidence interval is placed in varname1, and the upper bound is placed in varname2.

^equation(^#^)^ (synonym ^outcome(^#^)^) specifies the outcome for which the pr > edicted probabilities, standard errors, or confidence intervals are to be computed. The # is either (1) an equation number, e.g., #1, #2,..., (2) the numeric value of the outcome, or (3) the value label of the outcome.

For both ^mlogit^ and ^svymlog^ equation numbers (#1, #2,...) can always be used to specify outcomes.

For ^mlogit^, numeric values of the outcome can always be used. If ^mlogit > ^ uses value labels to label equations, then value labels can also be used to specify outcomes.

For ^svymlog^, numeric values can only be used if equations on the ^svymlog > ^ output are labeled with numeric values. If ^svymlog^ uses value labels to label the equations, then value labels must be used rather than numeric values.

^level(^#^)^ specifies the confidence level (i.e., nominal coverage rate), in percent, for confidence intervals; see help @level@.

Technical note ---------------

Confidence intervals for predicted probabilities are constructed using a logit transform so that their endpoints always lie between 0 and 1.

Examples ---------

. ^mlogit y x1 x2 x3^

. ^mlogpred phat, equation(#1)^ . ^mlogpred phat, outcome(1)^ . ^mlogpred phat, prob out(Good)^

. ^mlogpred sehat, se eq(#1)^

. ^mlogpred lb ub, ci eq(#1)^

. ^svymlog choice age income^

. ^mlogpred p1, equation(#1)^ . ^mlogpred red, outcome(red car)^

. ^mlogpred error, se outcome(blue car)^

. ^mlogpred ci1 ci2, ci outcome(purple truck)^

Author -------

Bill Sribney Stata Corporation 702 University Drive East College Station, TX 77840 email: wsribney@@stata.com

Also see ---------

STB: ^STB-40 svy6 (svymlog)^ Manual: ^[R] mlogit^ ^[R] predict^ ^[R] svy^ On-line: help for @mlogit@, @svymlog@ (if installed); @predict@, @svy@