Included studies differed widely according to interventions provided,
measures of diet adherence, dietary advice, nature of the
chronic diseases and duration of interventions and follow-up.
Therefore, data were not pooled statistically. Instead, we present a
qualitative analysis described in a narrative table using vote counting
for each category of interventions (see Additional tables). We
also created forest plots for outcomes from studies comparing a
single or multiple intervention group with a control/usual care
group (see Figure 3; Figure 4; Figure 5). Among the 32 studies
that measured diet adherence outcomes between an intervention
group and a control/usual care group, 32 out of 123 diet adherence
outcomes favoured the intervention group, 4 favoured the
control group whereas 62 had no significant difference between
groups. This result was impossible to assess for 25 diet adherence
outcomes as data and/or statistical analyses needed for comparison
between groups were not provided (Additional tables).
Included studies differed widely according to interventions provided,measures of diet adherence, dietary advice, nature of thechronic diseases and duration of interventions and follow-up.Therefore, data were not pooled statistically. Instead, we present aqualitative analysis described in a narrative table using vote countingfor each category of interventions (see Additional tables). Wealso created forest plots for outcomes from studies comparing asingle or multiple intervention group with a control/usual caregroup (see Figure 3; Figure 4; Figure 5). Among the 32 studiesthat measured diet adherence outcomes between an interventiongroup and a control/usual care group, 32 out of 123 diet adherenceoutcomes favoured the intervention group, 4 favoured thecontrol group whereas 62 had no significant difference betweengroups. This result was impossible to assess for 25 diet adherenceoutcomes as data and/or statistical analyses needed for comparisonbetween groups were not provided (Additional tables).
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