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Table. 4.

Table. 4.

Result of Negative binomial regression

Independent Variables Dependent Variables

Beta(β) Wald 95% CI Wald Chi-Square P-Value
Age 65-74 Ref
75-84 -0.07 -0.08 ~ -0.06 247.5 <0.001
Over 85 -0.06 -0.08 ~ -0.06 163.0
Gender Male Ref
Female 0.07 0.06~0.07 335.4 <0.001
Type of Insurance Health Insurance Ref
Medical Aid 0.15 0.14~0.16 898.0 <0.001
Others 0.25 0.11~0.41 11.2 0.0008
Dementia No Ref
Yes 0.19 0.19~0.20 2461.2 <0.001
Schizophrenia No Ref
Yes 0.41 0.39~0.44 1004.0 <0.001
Type of Antipsychotic Drugs Typical Ref
Atypical 0.59 0.58~0.61 4705.1 <0.001
Others* 0.41 0.39~0.43 1729.7 <0.001
Mixed** 1.39 1.38~1.42 18004.1 <0.001
CCI Score 0 Ref
1 0.1 0.09-0.11 295.5 <0.001
2 0.09 0.08-0.10 225.4 <0.001
≧ 3 0.03 0.02-0.04 21.4 <0.001
Specialty Psychiatry Ref
Internal Medicine -0.07 -0.08 ~ -0.05 168.1 <0.001
Neurology -0.3 -0.31 ~ -0.29 4202.5 <0.001
Others*** -0.03 -0.05 ~ -0.02 40.9 <0.001
Region Seoul Ref
Metropolitan 0.16 0.15~0.17 831.5 <0.001
Rural(City or County) 0.14 0.13~0.15 841.5 <0.001
Type of Medical Institution Tertiary hospital Ref
General hospital 0.26 0.25~0.27 2124.8 <0.001
Hospital 0.52 0.50~0.53 5141.2 <0.001
Healthcare Institute 0.63 0.61~0.64 4822.7 <0.001
Clinic 0.63 0.62~0.64 11076.9 <0.001
Others**** 0.09 0.03~0.15 8.9 0.002
Deviance(Value/DF) 1.01
Dispersion 0.541

CCI(Charlson Comorbidity Index), *Not in Typical or Atypical major tranquilizers(Other major tranquilizers ingredient), **Type of Antipsychotic drugs were different from each other ingredient(≧1 type in Typical or Atypical or Others). ***Except of specialty(Internal medicine, Neurology, Psychiatry), ****Health center, Health subcenter, Primary healthcare post

Korean J Clin Pharm 2021;31:268-77 https://doi.org/10.24304/kjcp.2021.31.4.268
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