TY  - JOUR
T1  - Development of a Chronic Obstructive Pulmonary Disease Severity Classification System Using A Japanese Health Insurance Claims Database
JO  - Journal of Aging Research And Healthcare
VL  - 2
IS  - 2
SP  - 1
EP  - 12
PY  - 2017/2//
T2  - 
AU  - Keiko, Konomura
AU  - Hideaki, Nagai
AU  - Manabu, Akazawa
SN  - 2474-7785
DO  - https://doi.org/10.14302/issn.2474-7785.jarh-17-1727
UR  - http://oap-journals.orgjarh/article/577
KW  - Chronic obstructive pulmonary disease
KW  - COPD
KW  - severity classification system
KW  - severity score
KW  - principal component analysis
KW  - administrative database
ER  -