Table 4

 Mean (SE) health status, psychometric tests, and visual analogue scores after 4 weeks each of pressure and volume ventilation

OutcomePressureVolumeppC
p, raw probability; pC, Hochberg corrrection for multiple end points; MRF-28, Maugeri Foundation Respiratory Failure Questionnaire-28; SF-36, Short Form 36 z scores; AMIPB, Adult Memory and Information Processing Battery; SCOLP, Speed and Capacity of Language Processing test; STROOP, Stroop colour word test.
Health status
    MRF-28
        Daily activity50.3 (19.8)49.1 (17.0)0.571.00
        Cognitive function29.2 (22.4)25.0 (19.1)0.811.00
        Invalidity33.3 (16.2)26.7 (13.1)0.441.00
        Total39.3 (13.1)36.8 (12.7)0.991.00
    SF-36
        Physical functioning19.0 (3.1)20.1 (3.2)0.811.00
        Role physical29.8 (2.6)32.9 (3.4)0.281.00
        Body pain23.9 (4.1)23.9 (4.1)0.990.99
        General health21.5 (3.2)21.4 (2.9)0.991.00
        Physical Component Summary14.8 (3.9)15.5 (3.3)0.911.00
        Vitality43.0 (2.3)45.6 (2.7)0.381.00
        Social functioning38.6 (3.1)41.7 (3.6)0.361.00
        Role emotional41.7 (4.2)44.3 (4.1)0.611.00
        Mental health50.1 (3.0)51.7 (2.9)0.691.00
        Mental Component Summary53.7 (3.6)56.3 (3.6)0.511.00
    HAD
        Anxiety6.5 (1.3)6.3 (0.4)0.210.42
        Depression4.1 (0.2)3.8 (0.2)0.810.81
Physical activity (steps/day)1216 (277)1734 (761)0.30.3
Psychometric tests
    Serial boxes (s)16.1 (0.5)15.8 (0.6)0.770.77
    Trailmaking B-A (s)39.6 (6.3)43.2 (6.9)0.641.00
    Rey List Learning50.2 (3.5)47.3 (2.9)0.211.00
    AMIPB (info processing)39.9 (4.3)35.6 (1.9)0.191.00
    AMIPB (design learning)36.5 (1.8)33.0 (2.0)0.080.64
    Digit span3.5 (0.3)3.7 (0.2)0.581.00
    SCOLP (no correct)61.6 (5.5)58.6 (5.6)0.401.00
    STROOP C (no correct)99.4 (5.2)95.4 (5.7)0.191.00
Visual analogue scales
    Ventilator comfort6.0 (1.9)6.7 (1.4)0.571.00
    Sleep quality6.5 (1.5)6.1 (2.1)0.790.79
    Breathlessness6.3 (0.9)5.7 (1.8)0.591.00