Guidance
8 Gaps in the evidence
8 Gaps in the evidence
The Public Health Advisory Committee (PHAC) identified a number of gaps in the evidence related to the programmes under examination based on an assessment of the evidence. These gaps are set out below.
1. There is a lack of systematic reviews of cohort or trial data considering the complexity of a combination of dietary, physical activity and other lifestyle behaviours on weight outcomes.
(Source: Evidence review 1)
2. There is a lack of systematic reviews of cohort or trial data considering the complexity of a combination of dietary, physical activity and other lifestyle behaviours on weight outcomes for different population groups.
(Source: Evidence review 1)
3. There is a lack of systematic reviews of trial data on modifiable behaviours and weight outcomes for which cohort evidence is available (such as sleep or breakfast consumption).
(Source: Evidence review 1)
4. There is a lack of systematic reviews of cohort or trial data considering the effect of inequalities (such as socioeconomic status or ethnicity) on associations between modifiable behaviours and weight outcomes for different population groups.
(Source: Evidence review 1)
5. There is a lack of systematic reviews of cohort or trial data considering the tracking of modifiable behaviours and weight outcomes through the lifecourse for different population groups.
(Source: Evidence review 1)
6. There is a lack of systematic reviews of cohort or trial data considering associations between dietary patterns (such as eating frequency, speed, settings, meal planning) and weight outcomes.
(Source: Evidence review 1)
7. There is a lack of systematic reviews of cohort or trial data considering associations between sedentary behaviours and incidental activities (such as time spent standing) and weight outcomes.
(Source: Evidence review 1)
8. There is a lack of systematic reviews on the optimal method and frequency of self-monitoring of behaviours among non-obese, general population groups.
(Source: Evidence review 1)
9. There is a lack of UK-based qualitative data considering the acceptability of messages for different population groups on specific modifiable behaviours that may help individuals maintain a healthy weight or prevent excess weight gain.
(Source: Evidence review 2)