Additional file 2.
Sensitivity analyses using a different income category cut-off of US$39, 000 for the lowest category in multivariable-adjusted analyses. This table shows the sensitivity analyses that used a different cut-off for income for the lowest income category of US$39, 000 instead of US$35, 000 (as in the main model).
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Singh and Lewallen BMC Medicine 2013 11:62 doi:10.1186/1741-7015-11-62