Describing numeric fields

v1.0
Other Commands How to...

describe [variable1] [variable2...][/Quiet][/N /Nomissing]

des

The describe command will generate a descriptive distributional statistic for the indicated variable(s). Variable(s) must be numeric.
If not variable names are indicated, describe will generate a descriptive summary of all numeric variables in the current data file.
With des, you must use * to indicate ALL variables
Note percentiles are weighted for distance bettwen observations.

Output:

For each variable total number of records used in calculations plus Sum, Mean 95% Conf. Interval, Minimum value, Percentiles (5,10,25,50=Median, 75, 90 and 95) and Maximun value are diplayed

Notice this command needs more than one observation for a given variable


Examples and Hints
Describe AGE                        (Generate a descriptive of AGE, assuming AGE is a numeric variable) 
Describe AGE BMI (Generate a descriptive of AGE and BMI, assuming both are numeric variable)

Related Commands:
Means Frequency
Options:
Quiet
N /Nomissing

Quiet performs the calculations but no output will be displayed


Records with missing in any variable are excluded


Output variables:
$variable#
$Missing#
$Obs#
$Sum#
$mean#
$var#
$sd#
$cfil#
$cfih#
$stdErr#
$min#
$p05#
$p10#
$p25#
$p50#
$p75#
$p90#
$p95#
$max#
#
Variable Name
Number of record with missing value
Number of observations (records) included in calculation
Sum of all values
Average
Varianza
Standard Deviation
Lower limit of the Con. Interval
Upper limit of the Con. Interval
Standard Error
Minimun value
Percentil 5
Percentil 10
Percentil 25
Percentil 50. Median
Percentil 75
Percentil 90
Percentil 95
Maximun Value
A sequential value different for each nuemeric variable
Output definition:
set table design stat=line[box][filled][...]
Allow you to set the table design
References:
Bland M.Introduction to Medical Statistics, Oxford, 1995. Second Ed. p 55
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