Assessing data availability and quality within an electronic health record system through external validation against an external clinical data source

Table 2 Smoking status classification between the external questionnaire and the joint EHR sources

Cross-tabulation of the smoking statuses individuals reported on an unrelated questionnaire against our informatics pipeline identified smoking statuses. Current = current smoker; former = former smoker; never = never smoker; smoker = smoker temporality unknown; unknown = record did not contain enough information relating to smoking behaviors to classify. Bolded numbers are concordant for status between the EHR and external records

ISSN: 1472-6947