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Table 2 Multivariate analysis of annual inpatient costs per patient for three DRGs

From: The costs of inappropriate referral pathways in inpatient care for three major noncommunicable diseases in Mongolia: a national registry-based analysis

Variables Coefficient (exponential) Clustered SE
Observations 117,623  
Intercept
 int$ 642.2 (0.009)
Gender (ref = female)
 Male 1.04*** (0.004)
Age group (ref = 0–40)
 40–50 1.08*** (0.007)
 50–60 1.09*** (0.006)
 60–70 1.10*** (0.008)
 70–80 1.14*** (0.009)
 80+ 1.15*** (0.011)
Location (ref = urban)
 Rural 1.29*** (0.004)
Social status (ref = Formal sector)
 Private sector 0.98** (0.009)
 Herders 1.01 (0.009)
 Pensioners 0.98** (0.009)
 Others 0.98** (0.008)
Comorbidities (ref = 0)
 1–2 1.01* (0.004)
Official referral (pathways (ref = Yes)
 No 1.23*** (0.005)
Year (ref = 2016)
 2017 1.19*** (0.004)
 2018 0.91*** (0.004)
  1. *p < 0.1; **p < 0.05; ***p < 0.01
  2. Generalized linear model, log-link link with clustered standard errors, price level at 2018