Table 8Summary GRADE table (Letterbox club vs Wait List)

OutcomeSample sizeEffect size (95% CI)QualityInterpretation of effecta
Reading accuracy mean score 4-weeks post-intervention (assessed using the Neale Analysis of Reading Ability)116MD 1.00 (−4.57 to 6.57)HighNo meaningful difference
Reading comprehension mean score 4-weeks post-intervention (assessed using the Neale Analysis of Reading Ability)116MD −0.49 (−6.44 to 5.46)HighNo meaningful difference
Reading rate mean score 4-weeks post-intervention (assessed using the Neale Analysis of Reading Ability)116MD −3.15 (−8.74 to 2.44)ModerateCould not differentiate
Recreational reading mean score 4-weeks post-intervention (assessed using the Elementary Reading Enjoyment Scale (known as the ‘Garfield Test’))116MD −0.81 (−3.47 to 1.87)ModerateCould not differentiate
Academic reading mean score 4-weeks post-intervention (assessed using the Elementary Reading Enjoyment Scale (known as the ‘Garfield Test’))116MD −0.67 (−3.32 to 1.98)HighNo meaningful difference
Odds of liking school “a lot” 4-weeks post-intervention (children were asked “Do you like school?” with the option of reply “not really”, “a little” or “a lot”)116OR 0.68 (0.31 to 1.47)LowCould not differentiate
Like reading “a lot” 4-weeks post-intervention (children were asked “Do you like reading?” with the option of reply “not really”, “a little” or “a lot”)116OR 0.93 (0.43 to 2.01)LowCould not differentiate
(a)

No meaningful difference: crosses line of no effect but not line of MID; Could not differentiate: crosses line of no effect and line of MID; May favour: confidence intervals do not cross line of no effect but cross MID; Favours: confidence intervals do not cross line of no effect or MID

From: Interventions to support learning needs for school-aged looked-after children and young people

Cover of Interventions to support learning needs for school-aged looked-after children and young people
Interventions to support learning needs for school-aged looked-after children and young people: Looked-After Children and Young People: Evidence review I.
NICE Guideline, No. 205.
Copyright © NICE 2021.

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.