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Source: Own estimations using Guyana IE surveys, 2007-2009  Table 17: School Enrollment in 2007 and 2009  Enrollment at baseline was higher for control schools. More schools were incorporated in the treatment group in 2008 and 2009 making the total number of children enrolled in treatment schools higher than in control schools. The changes in enrollment can be confounding because comparison groups were dissimilar at baseline. This is suggestive of sample selection in the outcome variable and would lead to biased program impact estimates.

Table 17 Source: Own estimations using Guyana IE surveys, 2007-2009 Table 17: School Enrollment in 2007 and 2009 Enrollment at baseline was higher for control schools. More schools were incorporated in the treatment group in 2008 and 2009 making the total number of children enrolled in treatment schools higher than in control schools. The changes in enrollment can be confounding because comparison groups were dissimilar at baseline. This is suggestive of sample selection in the outcome variable and would lead to biased program impact estimates.