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. Author manuscript; available in PMC: 2013 May 1.
Published in final edited form as: Reg Anesth Pain Med. 2012 May;37(3):254–261. doi: 10.1097/AAP.0b013e31824889b6

Table 2.

Associations between comorbidities and method of payment group

Variables Government Private Charity P-
value
Charlson Comorbidity Index
(Weighted No., %)
0 960108 (93%) 2660033
(97%)
145060
(90%)
1 50421 (5%) 77622 (2.8%) 4089
(2.5%)
2 19150 (1.9%) 14706 (0.5%) 12360
(7.5%)
3 1080 (<1%) 0 0
4 1627 (<1%) 0 0
Charlson Comorbidity Index Diagnostic
Groups (Weighted No., %)
Congestive Heart Failure 3362 (0.3%) 0 0
Diabetes, No Complications 32771 (3%) 38761 (1.4%) 684
(0.4%)
0.002
Diabetes, with Complications 5041 (0.5%) 3764 (0.1%) 0
COPD 11257 (1.1%) 26260 (1%) 2110
(1.3%)
0.9
Cerebrovascular Disease 1689 (0.2%) 826 (0.03%) 0
Rheumatoid and Connective Tissue Disease 8352 (0.8%) 8935 (0.3%) 0
*

Moderate-Severe Liver Disease, Dementia = 0 events

Abbreviations: COPD = Chronic Obstructive Pulmonary Disease