Table 3Number of stays, stays per 10,000 population, and percentage change in rate of the most frequent all-listed procedures for hospital stays by age, 1997 and 2011

Age group and all-listed Clinical Classifications Software (CCS) proceduresNumber of stays with the procedure in thousandsNumber of stays with the procedure per 10,000 populationChange in rate, %
All ages, total stays34,67938,5911,2721,2393
< 1 year, total stays*4,4264,26211,79910,66510
  Prophylactic vaccinations and inoculations5491,4481,4633,623148
  Respiratory intubation and mechanical ventilation1631754344391
  Enteral and parenteral nutrition39120104301190
  Diagnostic spinal tap14769391172−56
1–17 years, total stays1,8211,40227120126
  Blood transfusion**26454664
  Repair of current obstetric laceration584296−31
  Cancer chemotherapy434066−11
  Respiratory intubation and mechanical ventilation3033456
18–44 years, total stays9,4449,3858508273
  Repair of current obstetric laceration1,0791,2719711215
  Cesarean section7731,2487011058
  Artificial rupture of membranes to assist delivery706919648127
  Fetal monitoring9527588667−22
  Blood transfusion**1473431330129
45–64 years, total stays6,4969,6951,1541,1711
  Blood transfusion**24783344101129
  Diagnostic cardiac catheterization, coronary arteriography57854410366−36
  Respiratory intubation and mechanical ventilation186493336080
  Upper gastrointestinal endoscopy, biopsy2754034949−1
65–84 years, total stays10,12110,5333,3192,95411
  Blood transfusion**5141,270169356111
  Respiratory intubation and mechanical ventilation36660312016941
  Diagnostic cardiac catheterization, coronary arteriography738563242158−35
  Upper gastrointestinal endoscopy, biopsy530483174135−22
  Arthroplasty knee2013746610559
85+ years, total stays2,3623,2836,0475,7235
  Blood transfusion**13840035369797
  Respiratory intubation and mechanical ventilation6514716825653
  Upper gastrointestinal endoscopy, biopsy122136313237−24
  Diagnostic ultrasound of heart (echocardiogram)651011651767
  Treatment, fracture or dislocation of hip and femur8791222159−28

Excludes ophthalmologic and otologic diagnosis and treatment, for which data was suppressed in 1997.


The number of stays with blood transfusion does not reflect the number of units of blood transfused.

Source: Agency for Healthcare Research and Quality (AHRQ), Center for Delivery, Organization, and Markets, Healthcare Cost and Utilization Project (HCUP), Nationwide Inpatient Sample (NIS), 1997 and 2011

From: Most Frequent Procedures Performed in U.S. Hospitals, 2011

Cover of Healthcare Cost and Utilization Project (HCUP) Statistical Briefs
Healthcare Cost and Utilization Project (HCUP) Statistical Briefs [Internet].

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