Train the Trainer Course book - Cochrane Public Health Group

(Q2) If there were differences between groups
for important confounders, were they
adequately managed in the analysis?
Yes
No
Not applicable
(Q3) Were there important confounders not
reported in the paper?
Yes
No
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Strong Moderate Weak
Blinding
(Q1) Was (were) the outcome assessor(s) aware
of the intervention or exposure status of
participants?
Yes
No
Not reported
Not applicable
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Strong Moderate Weak
Data collection methods
(Q1) Were the data collection tools shown to be
valid?
Yes
No
(Q2) Were data collection tools shown to be
reliable?
Yes
No
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Strong Moderate Weak
Withdrawals and drop-outs
(Q1) Indicate the percentage of participants
completing the study.
80-100%
60-79%
Less than 60%
Not reported
Not applicable
No differences, but results were still adjusted by
possible confounders. Covariates included in
regression:
Baseline scores, sex, ethnicity, baseline total
energy intake, baseline knowledge, having been
held back in school, mobility, number of adults
in the household, frequency of sit-down
dinners, whether both parents live with the
child, number of children living at home, and
how often the mother and father exercised.
No
Moderate
24-hour recall – no information provided on
whether the interviewers were aware which
group participants were allocated.
FAS – teachers, who would have been aware of
which group they were allocated to, supervised
the completion of the FAS.
Weak
No – FAS, Yes – 24-hr recall
Dietary intake and physical activity: Student
food and activity survey (FAS). Authors say that
FAS has indicated lower validity in this age
group. Therefore they added a 24-hour recall to
enhance validity (only for the post-intervention
data!). The 24-hour recall method has been
shown to be reliable and valid in children as
young as grade 3.
Yes – only 24-hr recall
Dietary recalls were performed by trained
interviewers. The 24-hour recall methods have
been shown to be reliable and valid in children
as young as grade 3.
Weak (because 24-hr recall results were adjusted
using the FAS)
60-79%
Baseline data – 90% of students completed
Follow-up – 88% in control and 89% in
intervention groups. Overall response rate with
complete predata and postdata was 61%.
99