Erratum | Open | Published:
Erratum to: Benefits of applying a proxy eligibility period when using electronic health records for outcomes research: a simulation study
BMC Research Notesvolume 8, Article number: 340 (2015)
The original article was published in BMC Research Notes 2015 8:229
Erratum to: BMC Res Notes (2015) 8:229 DOI 10.1186/s13104-015-1217-6
After publication of the original article , Additional file 1 was updated with the following statement, located towards the end of the document:
“Reproduced with permission from: Mannino DM, Higuchi K, Yu T-C, Zhou H, Li Y, Tian H, et al. Economic burden of chronic obstructive pulmonary disease by presence of comorbidities. CHEST Journal. Published online February 12, 2015. doi:10.1378/chest.14-2434.”
This is to credit an earlier publication in which the same additional file was used. The updated additional file (Additional file 1) can be found below.
Yu TC, Zhou H (2015) Benefits of applying a proxy eligibility period when using electronic health records for outcomes research: a simulation study. BMC Res Notes 8:229. doi:10.1186/s13104-015-1217-6
The online version of the original article can be found under doi:10.1186/s13104-015-1217-6.
Table S1. Table of the ICD-9 CM codes for comorbidities of interest.