Table 7.

BMI, depression scores, and education level

Group	BMI	Depression (z)	Education (z)
Group 1: Short sleep and no sleep problems/sleepiness	26.8 (4.1)	−0.2 (0.7)	0.1 (0.9)
Group 2: Short sleep and sleep problems/sleepiness	27.3 (4.8)	0.5 (1.5)*	−0.1 (1.1)*
Group 3: Recommended sleep and no sleep problems/sleepiness	25.7 (3.8)*	−0.2 (0.9)	0.0 (0.97)
Group 4: Recommended sleep and sleep problems/sleepiness	26.7 (4.4)	0.2 (1.1)*	0.0 (1.03)

*p < 0.001 (uncorrected), using “group 1: Short sleep and no sleep problems/sleepiness” as reference. Depression and education are given in z scores.