Table 2.

Comparing interruptive and non-interruptive CDS in terms of sensitivity and specificity.

Reference Standard: Nursing assessment	Interruptive CDS (Oct 1 – Oct 14, 2009)	Non-interruptive CDS (Oct 1 – Oct 14, 2010)	Chi-square
Sensitivity [95% CI]
Unadjusted	24% [17%, 32%]	14% [9%, 21%]	4.19 (p = 0.04)*
Clustering Adjustment	24% [16%, 32%]	14% [6%, 22%]	4.17 (p = 0.04)†
Specificity [95% CI]
Unadjusted	99% [97%, 99%]	98% [97%, 99%]	0.63 (p = 0.43)*
Clustering Adjustment	99% [98%, 100%]	98% [97%, 99%]	0.63 (p = 0.43)†

*Pearson chi-square test;

† Mantel-Haenszel test