Table 2. “Logical” criteria for data entry fields for EUA COVID-19 vaccine administration record analyses.

Field	“Logical” criteria
Lot number	Six to eight alphanumeric characters excluding dashes
Expiration date*	Less than nine numeric characters within the range of December 14, 2020 (date of first vaccine given) to the latest expiration date possible for the week's date range as found in CDC's Lot Number and Expiration Date Report file. *Expiration date of year 2069 were categorized separately from logical and illogical categories throughout the analysis
National Drug Code	Ten to 11 numeric characters excluding dashes