Childhood Obesity Trends and Data Analysis in Southampton
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Latest 2020/21 national child measurement data set
•
Dataset was release
was
delayed
from
mid-November 2021
to
12
th
January 2022
•
52%
of
Year R
children and
12%
of
Year 6
children were measured in 2020/21 in
Southampton Schools
•
Recommended
‘checks and
balances’ carried out on data
to see if smaller sample was
representative of previous years and trends in changes in birth data by ethnic group
before analysis
•
Year R
data was evaluated as a robust sample for analysis as a single year
(trends and
deprivation)
•
Year
6
data was evaluated as
indicative
but
not robust
for analysis as a single year
Year R data
Between 2016/17 and 2019/20 level of
childhood obesity and excess weight for
reception year children locally and
nationally have largely remained at
statistically similar levels*.
*(Except for in 2017/18 Southampton had a significantly higher
level than the national average for Year R obesity)
Latest data for 2020/21 shows a
significantly higher increase for obesity and
excess weight prevalence in year R locally
and nationally compared to the previous
four years.
The prevalence of obesity and excess
weight for Southampton year R children is
significantly higher than nationally levels
whereas previously it was similar.
2020/21 England - Year R:
Obese 14.4%
Excess Weight 27.7%
Southampton - Year R:
Obese 17.1%
Excess Weight 32.7%
Year 6 data – 2020/21 sample data NOT robust for statistical comparisons
The Year 6 2020/21 sample for
Southampton was too small to
make robust statistical
comparisons
However the prevalence for
Year 6 obesity (26%) and excess
weight (41%) mirrors the
national figures and increasing
prevalence in the trend data
follows the national direction of
travel.
2020/21 England - Year R:
Obese 25.5%
Excess Weight 40.9%
Southampton - Year R:
Obese 26.5%
Excess Weight 41.0%
Sex differences
Year R
40.5%
33.2%
26.5%
20.3%
% Point gap
7.3%
Males
significantly
higher
% Point gap
6.2%
Males
significantly
higher
Year 6
25.2%
25.9%
11.8%
12.0%
% Point gap
0.7%
Statistically
similar
% Point gap
0.2%
Statistically
similar
Overweight
including obese
Overweight including obese
Obese
Obese
2018/19
to
2020/21
There is a
statistically significant difference
between prevalence by
gender
for
Year 6
Southampton children in Year R
2012/13
to
2014/15
3,600
linked records by NHS
Number of the
SAME
children
Southampton children in Year 6
2018/19
to
2020/21
Linked analysis – Southampton children
Underweight
Healthy weight
Overweight
Obese
0.9%
1.4%
76.3%
61.9%
13.2%
12.8
%
23.4%
10.0%
Linked analysis – changes in weight status in Southampton
Of the
12.8%
of
children who were
OVERWEIGHT
in
Year R
Over three-quarters (78%) of obese children were still obese in Year 6, only a tenth
had become a healthy weight by Year 6 (10%)
Year R obesity is a clear predictive factor for obesity in Year 6. However……
Of the
10.0%
of
children who
were
OBESE
in
Year R
Almost half of overweight children in year R become obese by Year 6, whilst a fifth
had remained overweight, although 32% had become a healthy weight
Healthy weight
32.3%
Overweight
20.0%
Obese 47.5%
Healthy weight
10.3%
Overweight
12.2%
Obese 77.5%
Year R
Year 6
2012/13
to
2014/15
2018/19
to
2020/21
Linked analysis – changes in weight status in Southampton
Of the
13.2%
of
children who were
OVERWEIGHT
in
Year 6
Over two-thirds (
67%
) of
obese
children had
not been obese
in
reception
, in fact the
biggest proportion was for those who had been healthy weight (41%)
So although Year R obesity is a predictive factor for obesity in Year 6, interventions
targeted only at this cohort only have the potential to reduce Year 6 obesity by one third.
Of the
23.4%
of
children who
were
OBESE
in
Year 6
The
majority
of
overweight
children in
year 6
had been
healthy weight
in
reception
, whilst just below a fifth had remained overweight and a further 9% had
been obese
Healthy weight 71.4%
Overweight
19.4%
Obese
9.3%
Healthy weight 40.9%
Overweight
26.0%
Obese 33.1%
Year R
Year 6
2012/13
to
2014/15
2018/19
to
2020/21
Year R overweight (incl. obese) deprivation
Gap between children in the most and least deprived
parts of Southampton has widened more recently
The proportion of reception children classified with
excess weight in the most deprived quintile has
increased, whereas that proportion living in less deprived
areas appears to have fallen and remained lower
Excess weight
in
reception children
children statistically
significantly more prevalent in the most deprived
quintile (27.7%) than the least deprived quintile (18.6%)
(2018/19 to 2020/21 pooled)
Year 6 overweight (incl. obese) deprivation
Gap between children in the most and least deprived
parts of Southampton has widened more recently
The proportion of Year 6 children classified with excess
weight in the most deprived quintile has slowly risen,
whereas that proportion living in less deprived areas
has fluctuated then decreased overall
Excess weight in Year 6 children statistically significantly
more prevalent in the most deprived quintile (41.4%)
than the least deprived quintile (25.6%) (2018/19 to
2020/21 pooled)
Linked analysis – changes in weight status in Southampton
Year R
Year 6
2012/13
to
2014/15
2018/19
to
2020/21
20% least
deprived
20% most
deprived
Total
Of the
12.8%
of
children who were
OVERWEIGHT
in
Year R
Healthy weight
42.9%
Overweight
21.4%
Obese 35.7%
Of the
14.0%
of
children who were
OVERWEIGHT
in
Year R
Healthy weight
31.3%
Overweight
14.4%
Obese 54.4%
Of the
12.8%
of
children who were
OVERWEIGHT
in
Year R
Healthy weight
32.3%
Overweight
20.0%
Obese 47.5%
Key messages
•
Between
2016/17
and
2019/20, 1 in 10 reception year children
in England and Southampton were
measured to be
obese
……
•
In
2020/21
, this rose to
1 in 7
reception children
nationally
and
1 in 6 Southampton
reception year
children
•
Statistical tests show the increase
this recent year
compared to previous years is a
statistically higher
increase
.
•
Also for
2020/21
, comparing Southampton with national figures,
obesity levels
in
Southampton
reception year
children is
significantly higher
than
England
.
•
Analysis by deprivation has shown the
inequality gap
to be
widening further
for children living in the
most deprived areas
locally and nationally.
•
Year
6
data
mirrors
the
national
figures and
increasing prevalence
in the trend data follows the national
direction of travel, although the reduced cohort means robust comparisons can’t be made
•
Linked analysis continues to show obesity in Year R is a strong predictive factor for obesity in Year 6,
however….
•
Only a third of obese children in Year 6 were previously obese in Year R (with 40% previously a healthy
weight), so any interventions need to not only focus on obese children to avoid limited impact
Childhood obesity data analysis reveals an increase in obesity and excess weight prevalence among Year R and Year 6 children in Southampton for the 2020/21 academic year. While Year R data shows a significant rise compared to previous years, Year 6 data was not robust for statistical comparisons. Sex differences also indicate higher overweight and obesity rates in males. The analysis highlights the need for targeted interventions to address the growing obesity problem among children in Southampton.
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Presentation Transcript
I Childhood obesity task and finish group May 2022 Southampton City Council Southampton City Council
Latest 2020/21 national child measurement data set I Dataset was release was delayed from mid-November 2021 to 12th January 2022 52% of Year R children and 12% of Year 6 children were measured in 2020/21 in Southampton Schools Recommended checks andbalances carried out on data to see if smaller sample was representative of previous years and trends in changes in birth data by ethnic group before analysis Year R data was evaluated as a robust sample for analysis as a single year (trends and deprivation) Year 6 data was evaluated as indicative but not robust for analysis as a single year
Year R data I Between 2016/17 and 2019/20 level of childhood obesity and excess weight for reception year children locally and nationally have largely remained at statistically similar levels*. *(Except for in 2017/18 Southampton had a significantly higher level than the national average for Year R obesity) Latest data for 2020/21 shows a significantly higher increase for obesity and excess weight prevalence in year R locally and nationally compared to the previous four years. The prevalence of obesity and excess weight for Southampton year R children is significantly higher than nationally levels whereas previously it was similar. 2020/21 England - Year R: Southampton - Year R: Obese 14.4% Obese 17.1% Excess Weight 27.7% Excess Weight 32.7%
Year 6 data 2020/21 sample data NOT robust for statistical comparisons I The Year 6 2020/21 sample for Southampton was too small to make robust statistical comparisons However the prevalence for Year 6 obesity (26%) and excess weight (41%) mirrors the national figures and increasing prevalence in the trend data follows the national direction of travel. 2020/21 England - Year R: Southampton - Year R: Obese 25.5% Obese 26.5% Excess Weight 40.9% Excess Weight 41.0%
Sex differences I Year R 2018/19 to 2020/21 Year 6 Overweight including obese Overweight including obese % Point gap 0.7% Statistically similar % Point gap 7.3% Males significantly higher 25.2% 25.9% 40.5% 33.2% Obese Obese % Point gap 0.2% Statistically similar % Point gap 6.2% Males significantly higher 11.8% 12.0% 26.5% 20.3% There is a statistically significant difference between prevalence by gender for Year 6
I Linked analysis Southampton children Southampton children in Year R 2012/13 to 2014/15 3,600 linked records by NHS Number of the SAME children Southampton children in Year 6 2018/19 to 2020/21 0.9% 1.4% Underweight 76.3% 61.9% Healthy weight 13.2% Overweight 12.8% 23.4% Obese 10.0%
Linked analysis changes in weight status in Southampton I Year R 2012/13 to 2014/15 Year 6 2018/19 to 2020/21 Overweight 20.0% Healthy weight 32.3% Obese 47.5% Of the 12.8% of children who were OVERWEIGHT in Year R Almost half of overweight children in year R become obese by Year 6, whilst a fifth had remained overweight, although 32% had become a healthy weight Overweight 12.2% Healthy weight 10.3% Obese 77.5% Of the 10.0% of children who were OBESE in Year R Over three-quarters (78%) of obese children were still obese in Year 6, only a tenth had become a healthy weight by Year 6 (10%) Year R obesity is a clear predictive factor for obesity in Year 6. However
Linked analysis changes in weight status in Southampton I Year R 2012/13 to 2014/15 Year 6 2018/19 to 2020/21 Obese 9.3% Overweight 19.4% Healthy weight 71.4% Of the 13.2% of children who were OVERWEIGHT in Year 6 The majority of overweight children in year 6 had been healthy weight in reception, whilst just below a fifth had remained overweight and a further 9% had been obese Overweight 26.0% Healthy weight 40.9% Obese 33.1% Of the 23.4% of children who were OBESE in Year 6 Over two-thirds (67%) of obese children had not been obese in reception, in fact the biggest proportion was for those who had been healthy weight (41%) So although Year R obesity is a predictive factor for obesity in Year 6, interventions targeted only at this cohort only have the potential to reduce Year 6 obesity by one third.
Year R overweight (incl. obese) deprivation I Excess weight in reception children children statistically significantly more prevalent in the most deprived quintile (27.7%) than the least deprived quintile (18.6%) (2018/19 to 2020/21 pooled) Gap between children in the most and least deprived parts of Southampton has widened more recently The proportion of reception children classified with excess weight in the most deprived quintile has increased, whereas that proportion living in less deprived areas appears to have fallen and remained lower
Year 6 overweight (incl. obese) deprivation I Excess weight in Year 6 children statistically significantly more prevalent in the most deprived quintile (41.4%) than the least deprived quintile (25.6%) (2018/19 to 2020/21 pooled) Gap between children in the most and least deprived parts of Southampton has widened more recently The proportion of Year 6 children classified with excess weight in the most deprived quintile has slowly risen, whereas that proportion living in less deprived areas has fluctuated then decreased overall
Linked analysis changes in weight status in Southampton I Year R 2012/13 to 2014/15 Year 6 2018/19 to 2020/21 Overweight 20.0% Healthy weight 32.3% Obese 47.5% Of the 12.8% of children who were OVERWEIGHT in Year R Total Overweight 14.4% Healthy weight 31.3% Obese 54.4% Of the 14.0% of children who were OVERWEIGHT in Year R 20% most deprived Overweight 21.4% Healthy weight 42.9% Obese 35.7% Of the 12.8% of children who were OVERWEIGHT in Year R 20% least deprived
Key messages I Between 2016/17 and 2019/20, 1 in 10 reception year children in England and Southampton were measured to be obese In 2020/21, this rose to 1 in 7 reception children nationally and 1 in 6 Southampton reception year children Statistical tests show the increase this recent year compared to previous years is a statistically higher increase. Also for 2020/21, comparing Southampton with national figures, obesity levels in Southampton reception year children is significantly higher than England. Analysis by deprivation has shown the inequality gap to be widening further for children living in the most deprived areas locally and nationally. Year 6 data mirrors the national figures and increasing prevalence in the trend data follows the national direction of travel, although the reduced cohort means robust comparisons can t be made Linked analysis continues to show obesity in Year R is a strong predictive factor for obesity in Year 6, however . Only a third of obese children in Year 6 were previously obese in Year R (with 40% previously a healthy weight), so any interventions need to not only focus on obese children to avoid limited impact
