Table 4 Effect size and study power analysis of memory performance, global cognitive function and mood in trials of memory strategy training in mild cognitive impairment (MCI)
From: Cognitive and memory training in adults at risk of dementia: A Systematic Review
Citation | Design | Outcome measure | Effect size and 95% confidence Interval | ES > .5 or < -.5 | Power of study | > 1 whole number change in test score | Could Type II errors explain lack of significance? |
|---|---|---|---|---|---|---|---|
Rapp et al 2002 | RCT | Word List immediate T1 | .33 (-.58, 1.23) | No | .16 | Yes | Yes |
| Â | Â | Word list immediate T2 | -1.18 (-2.24, -.11) | Yes | .71 | No | Â |
| Â | Â | Word list delay T1 | .88 (-.07, 1.82) | Yes | .57 | Yes | Â |
| Â | Â | Word list delay T2 | -.36 (-1.36, .64) | No | .16 | Yes | Â |
| Â | Â | Paragraph immediateT1 | -.03 (-.93, .87) | No | .05 | Yes | Â |
| Â | Â | Paragraph immediate T2 | -.54 (- 1.54, .47) | Yes | .26 | Yes | Â |
| Â | Â | Paragraph delay T1 | .38 (-.53, 1.29) | No | .19 | Yes | Â |
| Â | Â | Paragraph delay T2 | -.14 (-1.13, .85) | No | .08 | Yes | Â |
| Â | Â | Profile of mood states | No data | Â | Â | Â | Â |
Belleville et al 2006 | NRCT | Word list immediate | .78 (-.06,1.63) | Yes | .75 | No | Yes |
| Â | Â | Word list delay | .62 (-.22, 1.45) | Yes | .42 | Yes | Â |
| Â | Â | Text immediate | .09 (-.73, .91) | No | .07 | Yes | Â |
| Â | Â | Text delay | -.42 (-1.25, .41) | No | .25 | No | Â |
| Â | Â | Scale of wellbeing | .21 (-.41, .83) | No | .13 | Yes | Â |
Wenisch et al 2007 | UCT | Story recall immediate | -.71 (-1.54, -.11) | Yes | Single | Yes | Yes |
| Â | Â | Story recall delay | .09 (-.71, .89) | No | group | No | Â |
Troyer et al 2008 | RCT | Word list T1 | .23 (-.82, .35) | No | .18 | No | No |
| Â | Â | Word list T2 | -.02 (-.58, .62) | No | .06 | No | Â |