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Trend analysis to determine the effect of time on ACS admission ratesa
Results from Cochran-Armitage trend test using normal approximation. Z<0 indicates decreasing trend in admission rates from 1999–2002; Z>0 indicates increasing trend from 1999–2002.
Two-sided p-value.
Marker conditions include appendicitis with appendectomy, hip fracture, and gastrointestinal obstruction.
ACS = ambulatory care sensitive
