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J Am Med Inform Assoc 12:458-473 doi:10.1197/jamia.M1627
  • Original Investigation

Effect of CPOE User Interface Design on User-Initiated Access to Educational and Patient Information during Clinical Care

Table 3

Opportunities and Response Rate Ratios during the Clinical Trial

Decision Support Opportunities Decision Support Responses Adjusted Response Rate Ratios*
Opportunity Code Control Intervention Control Intervention Ratio 95% CI
ABA 396 448 1 2 2.90† 0.059–140
MSH 15,116 20,886 2 57 13.4 3.0–59
WRX 45,596 61,311 3 43 9.67 2.2–43
MSB 45,421 61,359 2 57 21.2 4.3–100
QMR 15,115 20,908 1 51 32.7 3.3–320
TRD 32,234 42,631 0 50 ‡
LMR 24,357 32,961 9 39 3.11 1.1–8.7
Overall 178,235 240,504 18 278 9.72 4.7–20

  • CI = confidence interval.

  • ↵* Ratio of decision support opportunity response rates for intervention subjects over control subjects;

  • ↵† Not significant.

  • ↵‡ Could not calculate a ratio.

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