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. 2016 Sep 21;26(1):80–87. doi: 10.1007/s10826-016-0557-8

Table 1.

Means and standard deviations (in minutes) for sleep and time spending activities according to SES levels

N M SD
Sleep LSES 85 597.24 138.19
MSES 104 534.21 114.72
HSES 79 504.34 117.55
Total 268 545.41 128.54
Active LSES 85 126.23 93.10
MSES 104 127.79 97.91
HSES 79 119.21 77.36
Total 268 124.76 90.48
Screen time LSES 85 178.58 103.85
MSES 104 154.74 75.99
HSES 79 119.65 62.63
Total 268 151.96 85.46
Academic LSES 85 245.76 128.33
MSES 104 339.27 116.13
HSES 79 355.02 145.59
Total 268 314.25 137.13