Table 1 MI-EMSIS analysis variables. Eighteen variables were chosen based on their clinical significance, relevance to public health, and importance for evaluating EMS quality. The table below displays their types, descriptions, and criteria for being determined missing and/or invalid.
From: Data missingness in the Michigan NEMSIS (MI-EMSIS) dataset: a mixed-methods study
Variable type | Variable | Description | Missing and/or invalid criteria |
|---|---|---|---|
Demographics | Age | Age of patient | Blank or value less than 0 or greater than 115 |
Gender | Gender of patient | Blank or not applicable, not available, not recorded, not reported | |
Race | Race/ethnicity of patient | Blank or not applicable or not available or not recorded or not reported | |
Location | Patient’s Home Zip | Zip code of patient residence | Blank or more or less than 5 digits, or any alphanumeric characters |
Incident Zip Code | Zip code of incident location | Blank or more or less than 5 digits, or any alphanumeric characters | |
Destination Name | Name of patient’s destination facility | Blank | |
Destination Code | Type of destination | Blank | |
Clinical Narrative | Chief Complaint Narrative | Provider’s narrative of patient’s chief complaint | Blank |
Provider Primary Impression | Provider’s primary impression narrative | Blank | |
Medication Allergies | Patient’s reported medication allergies | Blank | |
Medical Surgical History | Patient’s medical/surgical history | Blank | |
Current Medication Name | Patient’s current medications | Blank | |
Vital Signs | SBP | Patient’s systolic blood pressure | Blank or alphanumeric or anything other than two or three digits |
DBP | Patient’s diastolic blood pressure | Blank or alphanumeric or anything other two or three digits | |
Pulse Rate | Patient’s pulse rate | Blank or alphanumeric or, greater than 300, or less than 5 | |
Pulse Oximetry | Patient’s pulse oximetry | Blank or negative or less than two digits or greater than 100 or with decimal points | |
Respiratory Rate | Patient’s respiratory rate | Blank or more than two digits or alphanumeric characters are invalid | |
Body Temperature | Patient’s body temperature | Blank is missing, negative is invalid, less than two digits is invalid |