Table 2 Hospital characteristics according to follow-up strategy after percutaneous coronary intervention.

From: Hospital-level variation in follow-up strategies after percutaneous coronary intervention, revealed in health claims data of Korea

 

Low (1st quartile)

Low-to-medium (2nd quartile)

Medium-to-high (3rd quartile)

High (4th quartile)

p value

FUCAG rate

No. of hospitals*

32 (25.0)

32 (25.0)

32 (25.0)

32 (25.0)

 

Teaching hospitals*

29 (31.2)

24 (25.8)

24 (25.8)

16 (17.2)

0.003

Urban*

21 (30.4)

17 (24.6)

17 (24.6)

14 (20.3)

0.37

Risk-standardized FUST rate†

0.495 (0.244–0.656)

0.159 (0.067–0.324)

0.231 (0.076–0.324)

0.114 (0.056–0.235)

 < 0.001

Beds (No.) †

840.0 (706.0–1050.0)

739.0 (590.0–981.5)

670.0 (542.5–871.0)

676.0 (432.0–949.8)

0.089

Annual PCI volume†

394.0 (198.3–538.1)

336.2 (180.0–544.1)

305.6 (195.9–495.5)

312.3 (188.1–554.0)

0.84

RSDR†

0.078 (0.064–0.082)

0.067 (0.062–0.076)

0.078 (0.069–0.085)

0.069 (0.061–0.079)

0.039

RSMR†

0.056 (0.046–0.064)

0.051 (0.044–0.059)

0.054 (0.047–0.068)

0.049 (0.041–0.054)

0.16

RSRR†

0.125 (0.117—0.157)

0.144 (0.126–0.162)

0.160 (0.144–0.206)

0.167 (0.154–0.202)

 < 0.001

RSCR†

0.212 (0.199–0.239)

0.219 (0.209–0.239)

0.249 (0.221–0.289)

0.248 (0.227–0.269)

 < 0.001

FUST rate

No. of hospitals*

32 (25.0)

32 (25.0)

32 (25.0)

32 (25.0)

 

Teaching hospitals*

15 (27.1)

26 (28.8)

23 (25.4)

29 (18.6)

 < 0.001

Urban*

16 (23.2)

15 (21.7)

17 (24.6)

21 (30.4)

0.46

Risk-standardized FUCAG rate†

0.481 (0.356–0.634)

0.511 (0.314–0.641)

0.408 (0.283–0.522)

0.256 (0.165–0.459)

 < 0.001

Beds (No.) †

557.3 (427.0–739.5)

797.5 (542.5–985.5)

714.3 (615.5–1006.0)

889.0 (695.5–1050.0)

 < 0.001

Annual PCI volume†

226.8 (161.4–416.9)

416.0 (213.2–526.7)

339.7 (200.8–464.4)

413.1 (243.9–667.8)

0.077

RSDR†

0.072 (0.065–0.079)

0.073 (0.066–0.083)

0.071 (0.063–0.084)

0.072 (0.059–0.080)

0.83

RSMR†

0.051 (0.047–0.056)

0.052 (0.049–0.058)

0.059 (0.048–0.067)

0.050 (0.042–0.062)

0.26

RSRR†

0.152 (0.144–0.198)

0.159 (0.140–0.183)

0.153 (0.125–0.177)

0.142 (0.122–0.168)

0.061

RSCR†

0.235 (0.214–0.268)

0.244 (0.215–0.269)

0.232 (0.210–0.267)

0.216 (0.204–0.244)

0.047

  1. *Data are expressed as number (percentage).
  2. †Data are expressed as median (interquartile range).
  3. FUCAG follow-up invasive coronary angiography, FUST follow-up stress testing, PCI percutaneous coronary intervention, RSCR risk-standardized the composite outcome (a composite of all-cause death, myocardial infarction, or repeat revascularization) rate, RSDR risk-standardized death rate, RSMR risk-standardized myocardial infarction rate, RSRR risk-standardized repeat revascularization rate.
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