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. Author manuscript; available in PMC: 2014 Mar 19.
Published in final edited form as: Behav Sleep Med. 2013 Feb 12;11(3):159–172. doi: 10.1080/15402002.2011.602776

Table 2.

Cumulative GPA Means for Gender, Ethnicity, and Academic Rank

Variable M SD F p η2
Gender (n=833) 11.59 .001 .014
 Female 2.92 .73
 Male 2.72 .68

Ethnicity (n = 867) 7.85 <.001 .027
 African Americans 2.65b .69
 Asian/Pacific Islander 3.02a .72
 Caucasians 2.92a .70
 Hispanic 2.68b .80

Academic Rank (n = 867) 4.78 .003 .016
 Freshman 2.76a .81
 Sophomore 2.94b .67
 Junior 2.92 .68
 Senior 2.98b .53

Note. Means with differing letters are significantly different at the p < .05 based on Tukey’s HSD post hoc paired comparisons.