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Lorain County Community CollegeOwens Community College DifferenceProgram Control Difference Standard Program Control Difference Standard BetweenOutcome Group Group (Impact) Error Group Group (Impact) Error CollegesFourth postprogram semester bAppendix Table E.2 (continued)Registered for any courses (%) 29.5 24.8 4.7 3.0 20.8 21.9 -1.2 2.3Average number of credits attempted 2.7 2.3 0.5 0.3 2.0 2.0 0.1 0.2Regular credits 2.6 2.1 0.5 * 0.3 1.9 1.8 0.1 0.2Developmental credits 0.2 0.2 0.0 0.1 0.1 0.1 -0.1 0.0Sample size (total = 2,139) 451 447 622 619SOURCES: MDRC calculations from Lorain County Community College and Owens Community College transcript data.123NOTES: Rounding may cause slight discrepancies in sums and differences.A two-tailed t-test was applied to differences between research groups. Statistical significance levels are indicated as: *** = 1 percent; ** = 5 percent; * =10 percent.A two-tailed t-test was applied to differences of impacts between colleges. Statistical significance levels are indicated as: ††† = 1 percent; †† = 5 percent;† = 10 percent.Estimates are adjusted by cohort.GPA = grade point average.aThe “No GPA” category includes students who did not enroll and students who took only developmental courses, which are not included in GPAcalculations.bThe fourth postprogram semester does not include data for credits earned or term GPA.