{smcl} {* *! version 1.0}{...} {cmd:help sumqoi} {hline} {title:Title} {phang} {bf:sumqoi} {hline 2} Summarize quantities of interest {title:Syntax} {p 8 18 2} {cmd:sumqoi} [{varlist}] {ifin} [{cmd:,} {it:options}] {synoptset 27 tabbed}{...} {synopthdr} {synoptline} {syntab:Main} {synopt:{cmdab:s:tatistics:(}{it:{help tabstat##statname:statname}} [{it:...}]{cmd:)}} report specified statistics {p_end} {syntab:Options} {synopt:{opt f:ormat}[{cmd:(%}{it:{help format:fmt}}{cmd:)}]} display format for statistics; default format is {cmd:%9.0g} {p_end} {syntab:Reporting} {synopt:{opt l:evel(#)}}set confidence level; default is {cmd:level(95)}{p_end} {synopt:{opt cent:ile}}compute centile-based confidence intervals; the default{p_end} {synopt:{opt norm:al}}compute normal-based confidence intervals{p_end} {synoptline} {p2colreset}{...} {p 4 6 2} {opt by} is allowed; see {manhelp by D}. {p_end} {title:Description} {pstd} {cmd:sumqoi} summarizes quantities of interest that have been stored as variables in memory. By default, {cmd:sumqoi} reports the mean, standard deviation, and a centile-based confidence interval for the simulated quantities of interest. {title:Options} {dlgtab:Main} {phang} {cmd:statistics(}{it:statname} [{it:...}]{cmd:)} specifies the statistics to be displayed. ({opt stats()} is a synonym for {opt statistics()}.) Multiple statistics may be specified and are separated by white space, such as {cmd:statistics(mean sd)}. Available statistics are {marker statname}{...} {synoptset 17}{...} {synopt:{space 4}{it:statname}}Definition{p_end} {space 4}{synoptline} {synopt:{space 4}{opt me:an}} mean{p_end} {synopt:{space 4}{opt co:unt}} count of nonmissing observations{p_end} {synopt:{space 4}{opt n}} same as {cmd:count}{p_end} {synopt:{space 4}{opt su:m}} sum{p_end} {synopt:{space 4}{opt ma:x}} maximum{p_end} {synopt:{space 4}{opt mi:n}} minimum{p_end} {synopt:{space 4}{opt r:ange}} range = {opt max} - {opt min}{p_end} {synopt:{space 4}{opt sd}} standard deviation{p_end} {synopt:{space 4}{opt v:ariance}} variance{p_end} {synopt:{space 4}{opt cv}} coefficient of variation ({cmd:sd/mean}){p_end} {synopt:{space 4}{opt sem:ean}} standard error of mean ({cmd:sd/sqrt(n)}){p_end} {synopt:{space 4}{opt sk:ewness}} skewness{p_end} {synopt:{space 4}{opt k:urtosis}} kurtosis{p_end} {synopt:{space 4}{opt p1}} 1st percentile{p_end} {synopt:{space 4}{opt p5}} 5th percentile{p_end} {synopt:{space 4}{opt p10}} 10th percentile{p_end} {synopt:{space 4}{opt p25}} 25th percentile{p_end} {synopt:{space 4}{opt med:ian}} median (same as {opt p50}){p_end} {synopt:{space 4}{opt p50}} 50th percentile (same as {opt median}){p_end} {synopt:{space 4}{opt p75}} 75th percentile{p_end} {synopt:{space 4}{opt p90}} 90th percentile{p_end} {synopt:{space 4}{opt p95}} 95th percentile{p_end} {synopt:{space 4}{opt p99}} 99th percentile{p_end} {synopt:{space 4}{opt iqr}} interquartile range = {opt p75} - {opt p25}{p_end} {synopt:{space 4}{opt q}} equivalent to specifying {cmd:p25 p50 p75}{p_end} {space 4}{synoptline} {p2colreset}{...} {dlgtab:Options} {phang} {opt format} and {cmd:format(%}{it:{help format:fmt}}{cmd:)} specify how the statistics are to be formatted. The default is to use a {cmd:%9.0g} format. {dlgtab:Reporting} {phang} {opt level(#)}; see {helpb estimation options##level():[R] estimation options}. {phang} {opt centile} specifies calculation of centile-based confidence intervals; the default. {phang} {opt normal} specifies calculation of normal-based confidence intervals. {title:Examples} {pstd}Setup{p_end} {phang2}{cmd:. sysuse auto}{p_end} {pstd}Simulate parameters via Post-estimation Simulation{p_end} {phang2}{cmd:. {helpb postsim}, saving(myfile): regress mpg weight foreign}{p_end} {pstd}Simulate expected values at specific values of covariates{p_end} {phang2}{cmd:. {helpb simqoi} using myfile, at( foreign=(0 1) ) gen(foo)}{p_end} {pstd}Compute first difference{p_end} {phang2}{cmd:. generate diff = foo_at_2-foo_at_1}{p_end} {pstd}Summarize quantity of interest{p_end} {phang2}{cmd:. sumqoi diff}{p_end} {phang2}{cmd:. sumqoi diff, statistics(median iqr)}{p_end} {phang2}{cmd:. sumqoi diff, normal}{p_end} {title:Saved results} {pstd} {cmd:sumqoi} saves the following in {cmd:r()}: {synoptset 13 tabbed}{...} {p2col 5 13 17 2: Matrices}{p_end} {synopt:{cmd:r(sims)}}number of observations{p_end} {synopt:{cmd:r(mean)}}mean{p_end} {synopt:{cmd:r(se)}}standard deviation{p_end} {synopt:{cmd:r(lb)}}lower confidence bound{p_end} {synopt:{cmd:r(ub)}}upper confidence bound{p_end} {synopt:{cmd:r(Results)}}Results{p_end} {title:Author} {phang} Javier M{c a'}rquez Pe{c n~}a,{break} Buend{c i'}a & Laredo, Mexico City.{break} javier.marquez@buendiaylaredo.com{break} {browse "http://javier-marquez.com/software/moreclarify"} {title:Also see} {psee} {space 2}Help: {cmd:{help sumqi}} (if installed);{break} {manhelp summarize R}, {manhelp tabstat R} {p_end}