Diabetes treatment and control: the effect of public health insurance for the poor in Mexico
Sandra G Sosa-Rubí, Omar Galárraga & Ruy López-Ridaura
Volume 87, Number 7, July 2009, 512-519
Table 1. Sociodemographic characteristics of adults with diabetes enrolled in the Seguro Popular and of uninsured adults, Mexico, 2006
||Percentage reduction in bias|
|Seguro Populara n = 430||Uninsureda n = 1061||t-test P‑value||Seguro Populara n = 425||Uninsureda n = 1029||t-test P‑value|
|Age, in years|
|Mean (asset index)c||–0.504||–0.235||0.000||–0.495||–0.433||0.000||76.9|
|Area of residence|
|Region of residence|
a Values are percentages, unless otherwise noted; percentages may not add up to 100% due to rounding error.
b Omitted (reference) category. Table reports nearest neighbour matching with common support. The t test for each covariable may show statistical significance for the variable evaluated for the entire sample; however, for the propensity score, t tests for insignificant differences were conducted at each propensity score block (results not shown). The percentage of bias reduction reports reduction in absolute bias between the treatment category (Seguro Popular enrollees) and the control category (the uninsured) as a percentage of the square root of the average of the sample variances in the treated and non-treated groups.
c The asset index is based upon household infrastructure, building materials, and ownership of certain durable assets, as a proxy for household’s wealth. It may be negative because it is constructed with principal components analysis. A more negative index indicates lower household wealth.Estimations based on data from the 2006 Encuesta Nacional de Salud y Nutrición.