Individual results comparing the total time to complete task (TTCT). A) Pen entry (PE) on paper vs. first round of bar code entry (BCE) after a brief tutorial and practice session (n = 24). B) First round of bar code entry after brief tutorial and practice session vs. second round of data entry using barcode entry for participants who chose to continue with the barcode system (n = 18). Mean time and standard deviation for TTCT with BCE was 235 ± 74 seconds vs. 204 ± 61 seconds for TTCT with PE in the first round of data entry. For subjects who completed 2 rounds of data entry using the barcode system, mean time and standard deviation for TTCT with BCE on the first round was 219 ± 37 seconds vs. 191 ± 25 seconds for TTCT with BCE in the second round of data entry.