The Results
Dramatic results were seen within just 3 months of the trial. The
children in the active group supplementing with fatty acids saw
significant improvements in reading (9.5 months), spelling (6.5
months) and behaviour, compared to the placebo group where no
overall improvement was made.
During the 3-6 month period when the placebo group crossed over
to fatty acid supplementation, considerable improvements were shown
in the same areas, with an average reading gain of 13.5 months and
an average spelling gain at over 6 months. The active group that
continued with fatty acid supplementation showed further signs of
progress or maintained their improvement.
At the start of the trial, all of the school children were a year
behind their chronological age for reading and spelling, but after
the trial, the active group who had been on fatty acids throughout
the trial made spelling and reading gains over and above their
chronological age.
Reading and Spelling
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Performance
- During the first 3 months the average gain for children
taking fatty acids was 9.5 months for reading and 6.5 months
for spelling. This was a highly significant improvement
compared to the control group gains for reading (p <
0.004) and spelling (p < 0.001).
- Between 3-6 months, children switching from placebo to
active capsules made an average reading gain of 13.5 months
and over 6 months for spelling. The fish oil group who had
been on fatty acids from the beginning of the trial
continued to make reading and spelling gains over and above
what would be expected for their chronological ages.
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Fatty Acids vs Stimulant Medication
The treatment effect size on Conners' Attention-deficit
Hyperactivity Disorder (ADHD) index rating was 0.55 in the
first 3 months, and over 0.70 over the 6 months. This is
comparable to the average effect size for stimulant
medication: 0.78. |
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ADHD
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Clinical range of ADHD
- At the start of the trial, the percentage of children
within the clinical range of ADHD was set at 32%
for the fatty acid group and 31% for the placebo group.
- After 3 months supplementation, the percentage of
children with the clincical range of an ADHD diagnosis
reduced to 18% for the fatty acid group, whereas this only
dropped by 1% in the placebo
group.
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Behaviour Raw Score Total
A raw score was calculated from the teacher rating form
that assessed each child's behaviour. After 3 months there was
a highly significant reduction (p < 0.0001) seen in the
active supplement group, compared to those on placebo, in this
behavioural score. The fatty acid group reduced from an
average score of 74.7 to 58.1., whereas the before and after
treatment scores for the placebo group were 69.5 and
67.9. |
DSM-IV Total ADHD
The active group saw significantly reduced (p < 0.00001)
teacher ratings on the Conners' DSM ADHD global scale after 3
months, compared with the placebo group. The placebo group saw
similar improvements on this scale after crossing over to the
active oils for the 3-6 month period of the
trial. |
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DSM-IV Hyperactive-Impulsive
After just 3 months children on the active supplement saw a
significant reduction on the rating scale of
Hyperactive-Impulsive behaviour, compared to those on placebo
(p < 0.00001). Further reductions were seen in the 3-6
month period of the study.
Impact on Behaviour
Compared to those in the placebo group, children taking
active supplementation made significant decreases in 11 out of
a total of 13 behavioural ratings, including features of
inattention, hyperactivity and
impulsivity. |