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. 2000 Jan-Feb;7(1):55–65. doi: 10.1136/jamia.2000.0070055

Table 3.

Data Availability and Number of Missing Entries for Pneumonia Severity Index (PSI) Variables of the Standard Data Set for 226 Patients

Characteristic Missing Values Data Availability
Age 0 1.000
Gender 0 1.000
Current history 1 0.996
Past history 0 1.000
Medication 6 0.973
Heart rate 3 0.987
Respiratory rate 1 0.996
Systolic blood pressure 4 0.982
Temperature 3 0.987
Average

0.991
Note: The nine required variables of the standard data set cover 12 data elements of the PSI.