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Table 2 Relationship between surgical volume and PSIs

From: Perioperative patient safety indicators and hospital surgical volumes

 

n

Low-volume

Mid-volume

High-volume

p value†

PSI#2

Death in low-mortality DRGs*

151,447

0.0 (0.0-0.0)

0.0 (0.0-0.0)

0.0 (0.0-0.0)

n.s.

PSI#3

Decubitus ulcer

998,048

8.0 (5.1-10.9)

4.5 (3.5-5.5)

3.8 (3.0-4.6)

p < 0.05

PSI#4

Death among surgical inpatients with serious treatable complications

28,314

384.6 (337.4-431.8)

293.3 (249.8-336.8)

214.5 (190.4-238.6)

p < 0.01

PSI#5

Foreign body left during procedure

1,220,717

0.0 (0.0-0.0)

0.0 (0.0-0.0)

0.0 (0.0-0.0)

n.s.

PSI#6

Iatrogenic pneumothorax

1,170,714

0.0 (0.0-0.1)

0.1 (0.0-0.1)

0.1 (0.0-0.1)

n.s.

PSI#7

Central venous catheter-related blood stream infections

827,855

0.2 (0.1-0.3)

0.2 (0.1-0.3)

0.3 (0.0-0.6)

n.s.

PSI#8

Postoperative hip fracture

491,103

1.1 (0.0-2.1)

0.4 (0.2-0.5)

0.6 (0.0-1.2)

n.s.

PSI#9

Postoperative hemorrhage or hematoma

539,515

18.4 (6.8-30.0)

31.2 (15.4-47.1)

41.4 (33.8-49.0)

p < 0.05

PSI#10

Postoperative physiologic and metabolic derangement

532,175

3.3 (2.3-4.4)

2.6 (2.1-3.2)

3.6 (3.0-4.1)

n.s.

PSI#11

Postoperative respiratory failure

448,338

12.4 (1.4-23.5)

8.8 (5.4-12.2)

5.3 (3.2-7.3)

n.s.

PSI#12

Postoperative pulmonary embolism or deep vein thrombosis

537,366

5.3 (1.6-9.1)

4.9 (1.1-8.6)

7.3 (1.5-13.0)

n.s.

PSI#13

Postoperative sepsis

561,102

4.4 (2.5-6.4)

5.1 (3.9-6.3)

10.5 (8.1-13.0)

p < 0.01

PSI#14

Postoperative wound dehiscence

81,364

10.2 (4.6-15.8)

11.5 (8.3-14.7)

9.9 (8.1-11.7)

n.s.

PSI#15

Accidental puncture or laceration

1,185,502

0.0 (0.0-0.0)

0.0 (0.0-0.0)

0.0 (0.0-0.0)

n.s.

PSI#16

Transfusion reaction

1,220,717

0.0 (0.0-0.0)

0.0 (0.0-0.0)

0.0 (0.0-0.0)

n.s.

PSI#17

Birth trauma - injury to neonate

3,068

0.0 (0.0-0.0)

0.0 (0.0-0.0)

0.0 (0.0-0.0)

n.s.

PSI#18

Obstetric trauma - vaginal delivery with instruments

207

0.0 (0.0-0.0)

9.2 (3.6-15.8)

19.2 (7.2-33.7)

n.s.

PSI#19

Obstetric trauma - vaginal delivery without Instruments

1,184

0.0 (0.0-0.0)

12.5 (6.2-20.5)

21.7 (9.6-37.0)

n.s.

  1. Score of PSIs are indicated by rate per 1,000 discharges. PSI#2 was calculated per 100, PSI#5 and #16 were observed cases.
  2. Directly calculated 95% CI of PSI#18 and #19 had wide range and lower limit was negative number. To improve this situation, we performed bootstrap method to calculate these 95% CI.
  3. PSI#1 and #20 were deleted since AHRQ quitted these support.
  4. *In this study, we calculated Death in Low-Mortality DPC/PDPS. †ANOVA was used for statistical analysis and Scheffe’s test for post hoc comparisons.
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BMC Research Notes

ISSN: 1756-0500

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