UCHART Statement: ANOM Procedure

Output Data Sets

OUTLIMITS= Data Set

The OUTLIMITS= data set saves decision limits and decision limit parameters. The following variables can be saved:

Table 4.17 OUTLIMITS= Data Set
Variable	Description
_ALPHA_	significance level ( $\text{[math]}$ )
_GROUP_	group-variable specified in the UCHART statement
_INDEX_	optional identifier for the decision limits specified with the OUTINDEX= option
_LDLU_	lower decision limit for occurrence rates
_LIMITK_	number of groups
_LIMITN_	number of opportunity units associated with the decision limits
_TYPE_	type (estimate or standard value) of _U_
_U_	value of central line of $\text{[math]}$ chart ( $\text{[math]}$ )
_UDLU_	upper decision limit for occurrence rates
_VAR_	response specified in the UCHART statement

Notes:

If the decision limits vary with the number of opportunity units, the special missing value V is assigned to the variables _LDLU_, _UDLU_, and _LIMITN_.
Optional BY variables are saved in the OUTLIMITS= data set.

The OUTLIMITS= data set contains one observation for each response specified in the UCHART statement. For an example, see Saving Decision Limits.

OUTSUMMARY= Data Set

The OUTSUMMARY= data set saves group summary statistics. The following variables are saved:

the group-variable
a response rate variable, whose name is response suffixed with U
a number of opportunity units variable, whose name is response suffixed with N

Given a response name that contains 32 characters, the procedure first shortens the name to its first 16 characters and its last 15 characters, and then it adds the suffix.

Group summary variables are created for each response specified in the UCHART statement. For example, consider the following statements:

proc anom data=Fabric;
   uchart (Flaws Ndefects)*Treatment / outsummary=Summary
                                       groupn = 30;
run;

The data set summary contains the variables Treatment, FlawsU, FlawsN, NdefectsU, and NdefectsN.

Additionally, the following variables, if specified, are included:

BY variables
block-variables
symbol-variable
ID variables
_PHASE_ (if the OUTPHASE= option is specified)

OUTTABLE= Data Set

The OUTTABLE= data set saves group summary statistics, decision limits, and related information. The following variables are saved:

Variable	Description
_ALPHA_	significance level ( $\text{[math]}$ )
_EXLIM_	decision limit exceeded on $\text{[math]}$ chart
group	values of the group variable
_LDLU_	lower decision limit for group rate
_LIMITN_	nominal number of opportunity units associated with the decision limits
_SUBU_	group rate
_SUBN_	number of opportunity units in group
_UDLU_	upper decision limit for group rate
_VAR_	response specified in the UCHART statement

In addition, the following variables, if specified, are included:

BY variables
block-variables
symbol-variable
ID variables
_PHASE_ (if the READPHASES= option is specified)

Note: The variable _EXLIM_ is a character variable of length 8. The variable _PHASE_ is a character variable of length 48. The variable _VAR_ is a character variable whose length is no greater than 32. All other variables are numeric.