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Table 4 Sensitivity analyses

From: Variation in the use of percutaneous coronary interventions among older patients with acute coronary syndromes: a multilevel study in Fukuoka, Japan

  Model 3 Model 4 Model 5
AOR (95% CI) P AOR (95% CI) P AOR (95% CI) P
Patient characteristics
 Sex
  Male Reference   Reference   Reference  
  Female 0.73 (0.67–0.79) <.001 0.73 (0.67–0.79) <.001 0.72 (0.66–0.78) <.001
 Age Category
  65–74 Reference     Reference  
  75–79 0.91 (0.79–1.03) .137    0.90 (0.79–1.03) .125
  80–84 0.86 (0.75–0.98) .027    0.86 (0.75–0.98) .022
   ≥ 85 0.71 (0.61–0.82) <.001    0.70 (0.60–0.81) <.001
 Age (continuous)    0.98 (0.97–0.99) <.001   
 Economic status
  Very low      Reference  
  Low Reference   Reference   0.93 (0.81–1.06) .274
  Middle 0.99 (0.91–1.08) 0.899 1.00 (0.92–1.09) .962 0.95 (0.84–1.07) .376
  High 1.05 (0.90–1.24) 0.520 1.06 (0.90–1.24) .508 1.00 (0.83–1.20) .997
 Type of ACS
  STEMI/unstable angina Reference   Reference   Reference  
  Others 0.31 (0.28–0.34) <.001 0.31 (0.28–0.34) <.001 0.31 (0.28–0.34) <.001
 Comorbidities
  Hypertension 1.32 (1.12–1.55) .001 1.31 (1.12–1.54) .001 1.32 (1.12–1.55) .001
  Dyslipidemia 1.20 (1.11–1.30) <.001 1.20 (1.11–1.30) <.001 1.20 (1.11–1.30) <.001
 CCI
  No    Reference   Reference  
  Mild    1.21 (0.95–1.54) .130 1.21 (0.95–1.55) .120
  Moderate    1.18 (0.93–1.50) .183 1.18 (0.93–1.51) .169
  Severe    1.20 (0.95–1.53) .131 1.22 (0.95–1.55) .114
  (continuous) 1.01 (0.99–1.02) 0.379     
Hospital characteristics
 Number of beds
   ≤ 199 Reference   Reference   Reference  
  200–399 1.52 (1.00–2.34) 0.052 1.53 (1.00–2.33) 0.052 1.53 (1.10–2.55) 0.050
   ≥ 400 1.11 (0.60–2.04) 0.743 1.11 (0.60–2.04) 0.745 1.11 (0.60–2.05) 0.742
 Ownership
  Public Reference   Reference   Reference  
  Private 1.37 (0.97–1.94) 0.078 1.37 (0.97–1.94) 0.075 1.37 (0.97–1.94) 0.075
 Number of physicians
  Low Reference   Reference   Reference  
  Middle 1.21 (0.75–1.95) 0.438 1.21 (0.75–1.95) 0.432 1.21 (0.75–1.96) 0.430
  High 2.04 (1.15–3.64) 0.014 2.05 (1.16–3.63) 0.014 2.06 (1.16–3.65) 0.014
δ2
 SMA level <.001 <.001 <.001
 Hospital level 0.545 0.541 0.543
ICC
 SMA level <.001 <.001 <.001
 Hospital level 0.142 0.141 0.142
MOR
 SMA level 1.000 1.000 1.001
 Hospital level 2.270 2.266 2.269
AIC 14,951.3 14,947.8 14,954.2
Log Likelihood − 7457.652 − 7455.895 −7456.101
  1. PCI percutaneous coronary intervention, ACS acute coronary syndromes, STEMI ST-elevation myocardial infarction, SMA secondary medical area, CCI Charlson Comorbidity Index, AOR adjusted odds ratio, CI confidence interval, ICC intraclass correlation coefficient, MOR median odds ratio, AIC Akaike’s information criterion
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International Journal for Equity in Health

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