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Figure 3 | BMC Medical Informatics and Decision Making

Figure 3

From: Usability of a barcode scanning system as a means of data entry on a PDA for self-report health outcome questionnaires: a pilot study in individuals over 60 years of age

Figure 3

Scan success rates when using the bar code entry system during the tutorial/practice (T), first round of bar code entry (BCE1) and second round of bar code entry (BCE2). A) Mean and standard deviation of first scan success rate expressed as a % of the questions answered across participants (n = 24). B) Mean and standard deviation of second scan success rate for unsuccessful first scan (expressed as a % of the questions answered) across participants (n = 24).

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