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. 2010 Nov 1;33(11):1475–1485.

Table 2.

Mixed-model ANOVA results for PVT speed, PVT lapses (transformed), modified MWT sleep latency, and SSS scores during social exposure

Psychomotor Vigilance Test, speed Num df Den df F value P value
    Intercept 1 41 116.61 0.000
    Personality 1 41 0.37 0.547
    Social Condition 1 41 0.09 0.767
    Sessiona 5 148 3.97 0.002
    Personality × Social Condition 1 41 1.97 0.168
    Personality × Session 5 148 0.79 0.556
    Social Condition × Session 5 148 0.62 0.685
    Personality × Social Condition × Session 5 148 1.38 0.235
    Total Activity 1 41 1.02 0.319
    Age 1 41 0.00 0.978
Psychomotor Vigilance Test, lapses (transformed)
    Intercept 1 41 12.45 0.001
    Personality 1 41 0.11 0.741
    Social Condition 1 41 0.76 0.389
    Session 5 153 1.17 0.325
    Personality × Social Condition 1 41 0.13 0.725
    Personality × Session 5 153 2.08 0.071
    Social Condition × Session 5 153 0.90 0.485
    Personality × Social Condition × Session 5 153 1.40 0.227
    Total Activity 1 41 1.19 0.282
    Age 1 41 0.74 0.395
Sleep latency on the modified Maintenance of Wakefulness Test
    Intercept 1 41 9.51 0.004
    Personalitya 1 42 8.80 0.005
    Social Condition 1 42 0.00 0.983
    Sessiona 5 168 2.92 0.015
    Personality × Social Condition 1 42 0.01 0.929
    Personality × Session 5 168 0.85 0.517
    Social Condition × Sessiona 5 168 2.62 0.026
    Personality × Social Condition × Session 5 168 0.97 0.440
    Total Activity 1 41 2.66 0.111
    Age 1 42 0.19 0.666
Sleepiness according to the Stanford Sleepiness Scale
    Intercept 1 50 21.81 0.000
    Personality 1 50 0.12 0.729
    Social Condition 1 50 1.12 0.294
    Session 5 111 1.39 0.233
    Personality × Social Condition 1 50 1.41 0.239
    Personality × Sessiona 5 111 2.87 0.018
    Social Condition × Sessiona 5 111 4.02 0.002
    Personality × Social Condition × Session 5 111 0.84 0.522
    Total Activity 1 50 0.24 0.625
    Age 1 50 0.77 0.383

ANOVA refers to analysis of variance; PVT, Psychomotor Vigilance Test; MWT, Maintenance of Wakefulness Test; SSS, Stanford Sleepiness Scale; den df, degrees of freedom of the denominator; nom df, degrees of freedom of the numerator.