Only observations that meet the condition(s) specified are included in the analysis. Using the Findings Test Short Name that has suffix TESTCD (for example for Labs this variable would be LBTESTCD) variable is recommended.IMPORTANT NOTE: For Vital Signs or ECG tests, if the variable with suffix POS exists (for example VSPOS), this value will be concatenated to TESTCD variable prior to where statement filtering (e.g., type VSTESTCD = "HR SUPINE" to plot only heart rate tested in supine position or type VSTESTCD contains "HR" to plot heart rate tested at all positions).