Table 3.
Pre-post-follow up values for both groups and differences between the groups at post test and follow-up test, controlled for pre test, interaction effects
| Experimental group (n = 57) | Control group (n = 55) | Interaction Time x group | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pre M (SD) | Post M (SD)a | Follow up M (SD)b | Pre M (SD) | Post M (SD)a | Follow up M (SD)b | Statistic | Value | Eta square | Statistic | Value | Eta square | |
| Objective measures: | ||||||||||||
| Night-time restlessness (L5) | 23.99 (24.71) | 23.88 (27.46) | 22.86 (21.30) | 21.84 (20.33) | 21.75 (22.92) | 15.71 (20.41) | F (1406) | P = .241 | .024 | F (2672) | P = 0.515 | .024 |
| Daytime activity (M10) | 129.29 (127.91) | 120.29 (104.58) | 112.71 (102.86) | 132.90 (116.22) | 98.70 (76.58) | 142.04 (165.09) | F (1092) | P = .763 | .002 | F (2874) | P = .065 | .095 |
| Intradaily variability (IV) | 1.26 (0.38) | 1.19 (0.40) | 1.24 (0.46) | 1.21 (0.46) | 1.24 (0.36) | 1.26 (0.40) | F (1850) | P = .361 | .015 | F (2771) | P = .029 | .121 |
| Interdaily stability (IS) | 0.39 (0.51) | 0.40 (0.17) | 0.33 (0.14) | 0.34 (0.16) | 0.37 (0.17) | 0.35 (0.17) | F (1710) | P = .403 | .013 | F (2060) | P = .010 | .155 |
| Amplitude (AMP) | 105.30 (116.70) | 96.41 (88.70) | 89.85 (89.67) | 111.06 (109.70) | 76.95 (64.65) | 126.32 (158.92) | F (1333) | P = .566 | .006 | F (2804) | P = .069. | .093 |
| Relative amplitude (rAMP) | 0.67 (0.19) | 0.69 (0.17) | 0.65 (0.21) | 0.69 (0.21) | 0.67 (0.24) | 0.77 (0.21) | F (1494) | P = .227 | .026 | F (2936) | P = .154 | .066 |
| Subjective measures: | ||||||||||||
| Restlessness | 8.22 (2.90) | 8.33 (3.15) | 7.25 (2.45) | 9.03 (3.82) | 9.00 (3.62) | 8.48 (3.46) | F (1213) | P = .148 | .027 | F (2401) | P = .671 | .010 |
| Repetitive behavior | 8.35 (3.64) | 8.49 (4.06) | 7.80 (3.58) | 8.07 (3.04) | 8.07 (3.97) | 7.76 (3.43) | F (1114) | P = .736 | .001 | F (2135) | P = .874 | .003 |
an = 52, bn = 38
L5 mean activity count of the 5 least active hours of the day = nocturnal activity or nighttime restlessness, M10 mean activity count per hour of the 10 most active hours in a 24-h period = daytime activity, IS a periodogram-based algorithm measuring day to day stability of the rhythm, IV fragmentation of the activity rhythm that assesses the period to period variability of the rhythm, AMP amplitude, RA relative amplitude, (M10-L5)/(M10 + l5)