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. 2019 Spring;18(1):ar8. doi: 10.1187/cbe.18-08-0153

TABLE 5.

Linear regression model with coefficients of the regression model represented in terms of raw points ± SE out of 100 pointsa

Regression coefficients Estimate ± SE p value
Model intercept 37.03 ± 4.07  
Student achievement
SAT Math score 0.054 ± 0.008 <0.001
College level (Reference level: Freshmen)
 Senior 8.73 ± 2.26 0.003
 Junior 4.81 ± 1.62 0.002
 Sophomore −0.25 ± 1.46 0.862
Race/ethnicity (Reference level: Hispanic)
 Black −4.91 ± 2.13 0.021
 White −0.96 ± 2.66 0.72
Course format (Reference level: Hybrid)
 Traditional lecture −14.85 ± 1.46 <0.001
 Online −9.53 ± 1.95 <0.001
Course format*Race/ethnicity (Reference level: Hybrid*Hispanic)
 Lecture*Black 0.45 ± 3.59 0.901
 Online*Black −3.87 ± 3.94 0.325
 Lecture*white −1.10 ± 4.37 0.817
 Online*white 15.15 ± 4.78 0.002

aThe categorical variable “college level” represents achievement by college level relative to the achievement of students at the freshman college level for students in all three course formats. The sex category represents the gains of male students in all three course formats relative to female students. The race/ethnicity category represents the performance by racial group relative to the performance of Hispanic students. After we controlled for college level, sex, and race/ethnicity, the coefficients of the regression model indicate that students in the hybrid format outperform students in either online or face-to-face format. The complete model explains more than a third of the variation in student achievement (R2 = 0.387, F(12, 397) = 20.87, p < 0.001).