Skip Navigation Archive: U.S. Department of Health and Human Services U.S. Department of Health and Human Services
Archive: Agency for Healthcare Research Quality www.ahrq.gov
AHRQ Home—Live Site | Archive Home | Site Map
Archival print banner

This information is for reference purposes only. It was current when produced and may now be outdated. Archive material is no longer maintained, and some links may not work. Persons with disabilities having difficulty accessing this information should contact us at: https://info.ahrq.gov. Let us know the nature of the problem, the Web address of what you want, and your contact information.

Please go to www.ahrq.gov for current information.

Table 9. NIS and NHDS Comparisons by Primary Procedures Ranked by NIS Data, 1995

Rank1 CCHPR Category2

Number of Discharges in Thousands
(Standard Error)

Average Length of Stay in Days
(Standard Error)

In-Hospital Mortality
Rate: Percent
(Standard Error)
NIS NHDS NIS NHDS NIS NHDS
1 115: Circumcision 1,060
(31)		 1,150
(44)		 2.21
(.02)		 2.17
(.14)		 .01a
(0.0)		 0.0
(b)
2 137: Other procedures to assist delivery 1,040
(45)		 933
(37)		 1.70
(.02)		 1.75
(.12)		 .01
(0.0)		 .02
(.03)
3 134: Cesarean section 800
(40)		 769
(32)		 3.61
(.02)		 3.60
(.24)		 .02
(0.0)		 .05
(.06)
4 133: Episiotomy 781**
(35)		 483
(22)		 1.68
(.02)		 1.62
(.13)		 0.0a
(0.0)		 0.0
(b)
5 47: Diagnostic cardiac catheterization, coronary arteriography 628**
(22)		 523
(24)		 4.35
(.02)		 3.95
(.28)		 1.14
(.03)		 .78
(.28)
6 70: Upper gastrointestinal endoscopy, biopsy 608**
(9)		 530
(24)		 6.51**
(.07)		 5.30
(.36)		 2.46
(.04)		 1.81
(.43)
7 124: Hysterectomy, abdominal and vaginal 545
(13)		 557
(25)		 3.37
(.02)		 3.39
(.24)		 .12
(.01)		 .11
(.10)
8 140: Repair of current obstetric laceration 512*
(20)		 591
(26)		 1.62
(.02)		 1.65
(.13)		 0.0a
(0.0)		 0.0
(b)
9 45: Percutaneous transluminal coronary angioplasty (PTCA) 460*
(29)		 383
(19)		 4.31
(.05)		 4.33
(.32)		 1.11
(.05)		 .93
(.36)
10 216: Respiratory intubation and mechanical ventilation 442**
(9)		 278
(15)		 11.59**
(.23)		 8.56
(.65)		 31.45*
(.41)		 27.40
(1.98)
11 84: Cholecystectomy and common duct exploration 413
(8)		 419
(20)		 5.32
(.06)		 4.73
(.34)		 .84
(.03)		 .42
(.23)
12 219: Alcohol and drug rehabilitation/detoxification 407
(31)		 361
(18)		 6.46
(.24)		 7.16
(.51)		 .09a
(.01)		 0.0
(b)
13 231: Other therapeutic procedures 404
(40)		 411
(20)		 5.89
(.12)		 5.53
(.39)		 2.67
(.18)		 2.63
(.58)
14 135: Forceps, vacuum, and breech delivery 393
(15)		 398
(19)		 1.84
(.02)		 1.96
(.17)		 .01
(0.0)		 .01
(.04)
15 3: Laminectomy, excision intervertebral disc 357
(13)		 318
(17)		 3.58
(.06)		 3.53
(.06)		 .20
(.01)		 .21
(.19)
16 44: Coronary artery bypass graft (CABG) 353
(21)		 329
(17)		 10.07
(.14)		 9.58
(.69)		 3.21
(.08)		 2.20
(.60)
17 177: Computerized axial tomography (CT) scan head 314*
(19)		 267
(15)		 6.17
(.16)		 5.70
(.45)		 4.59
(.13)		 4.11
(.90)
18 152: Arthroplasty knee 293
(8)		 275
(15)		 5.10
(.05)		 4.97
(.40)		 .21a
(.01)		 .08
(b)
19 224: Cancer chemotherapy 285*
(14)		 238
(14)		 4.36
(.10)		 3.98*
(.34)		 1.27
(.06)		 .47
(.33)
20 4: Diagnostic spinal tap 279
(9)		 255
(14)		 6.15**
(.08)		 5.01
(.41)		 2.28
(.08)		 1.57
(.58)
21 153: Hip replacement, total and partial 279
(7)		 254
(14)		 6.92
(.08)		 7.11
(.56)		 1.50
(.05)		 1.61
(.58)
22 146: Treatment, fracture or dislocation of hip and femur 273
(4)		 253
(14)		 7.68
(.08)		 7.56
(.59)		 2.25
(.06)		 2.89
(.78)
23 193: Diagnostic ultrasound of heart (echocardiogram) 247
(15)		 236
(14)		 5.71
(.10)		 5.62
(.46)		 2.27
(.09)		 1.60
(.60)
24 76: Colonoscopy & biopsy 239
(4)		 223
(13)		 6.78
(.06)		 6.15
(.51)		 1.63
(.05)		 .89
(.47)
25 217: Other respiratory therapy 192**
(18)		 264
(15)		 4.78
(.14)		 4.22
(.35)		 3.47*
(.22)		 1.86
(.61)

1 NIS rank is based on number of discharges.
2 Diagnoses classified according to Clinical Classifications for Health Policy Research, Version 2 (Elixhauser and McCarthy, 1996)
a A significance test was not performed because a valid standard error was not available.
b The NHDS sample size was too small to calculate a valid estimate of standard error.
* Difference is significant at the 0.05 level.
** Difference is significant at the 0.01 level.

Return to Document

Page last reviewed December 2012
Page originally created December 2012
Internet Citation: Table 9. NIS and NHDS Comparisons by Primary Procedures Ranked by NIS Data, 1995. Content last reviewed December 2012. Agency for Healthcare Research and Quality, Rockville, MD. https://archive.ahrq.gov/research/data/hcup/nhds/comptb9.html

The information on this page is archived and provided for reference purposes only.

 
AHRQ Advancing Excellence in Health Care