measuring adult bmi using the active people survey caroline hancock | sephig 26 march 2014
TRANSCRIPT
Measuring adult BMI using the Active People Survey
Caroline Hancock | SEPHIG 26 March 2014
Background• Purpose of data collection: PHOF
• Measured vs. self-report data
• Why use the Active People Survey?
2 Measuring adult BMI using the Active People Survey
Assessing the validity of self-report data
3 Measuring adult BMI using the Active People Survey
y = -0.0011x2 - 0.0014x + 179.3R² = 0.9499
y = -0.0023x2 + 0.0272x + 177.34R² = 0.9549
y = -0.001x2 + 0.0044x + 164.76R² = 0.9627
y = -0.0026x2 + 0.0561x + 163.27R² = 0.9781
150
155
160
165
170
175
180
185
16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92
Mea
n he
ight
(cm
)
Age (years)
APS M
HSE M
APS F
HSE F
Mean height by age and sex; HSE 20062010 and APS6 Q2 to APS7 Q1
Assessing the validity of self-report data
4 Measuring adult BMI using the Active People Survey
Mean weight by age and sex; HSE 20062010 and APS6 Q2 to APS7 Q1
y = -0.01x2 + 0.7421x + 73.73R² = 0.9027
y = -0.0094x2 + 0.7126x + 72.547R² = 0.932
y = -0.0086x2 + 0.6287x + 62.019R² = 0.9062
y = -0.0069x2 + 0.5344x + 59.574R² = 0.9007
50
55
60
65
70
75
80
85
90
16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92
Mea
n w
eigh
t (kg
)
Age (years)
HSE M
APS M
HSE F
APS F
Adjusting the self-report data
5 Measuring adult BMI using the Active People Survey
y = -7E-06x2 + 0.0002x + 0.9889R² = 0.774
y = -1E-05x2 + 0.0003x + 0.9908R² = 0.8937
0.94
0.95
0.96
0.97
0.98
0.99
1.00
16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92
Rela
tive
diff
eren
ce
Age (years)
Male Female
Relative difference in height by age and sex;measured HSE 20062010 compared to self-reported APS6 Q2 to APS7 Q1
Adjusting the self-report data
6 Measuring adult BMI using the Active People Survey
Relative difference in weight by age and sex;measured HSE 20062010 compared to self-reported APS6 Q2 to APS7 Q1
y = -6E-06x2 + 0.0002x + 1.016R² = 0.1038
y = -2E-05x2 + 0.0011x + 1.0415R² = 0.3957
0.94
0.96
0.98
1.00
1.02
1.04
1.06
1.08
1.10
16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92
Rela
tive
diff
eren
ce
Age (years)
Male Female
Adjusting the self-report data
7 Measuring adult BMI using the Active People Survey
Prevalence of excess weight (BMI ≥25kg/m2) by age, measured HSE 20062010, unadjusted and adjusted APS6 Q2 to APS7 Q1; Males
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88
Prev
alen
ce o
f ove
rwei
ght (
incl
udin
g ob
ese)
Age (years)
HSE
APS (adjusted)
APS (unadjusted)
Adjusting the self-report data
8 Measuring adult BMI using the Active People Survey
Prevalence of excess weight (BMI ≥25kg/m2) by age, measured HSE 20062010, unadjusted and adjusted APS6 Q2 to APS7 Q1; Females
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88
Prev
alen
ce o
f ove
rwei
ght (
incl
udin
g ob
ese)
Age (years)
HSE
APS (adjusted)
APS (unadjusted)
Accessing the LA data
9 Measuring adult BMI using the Active People Survey
www.phoutcomes.info
Accessing the LA data
10 Measuring adult BMI using the Active People Survey
www.phoutcomes.info
• Supporting indicators available on PHE Obesity website (noo.org.uk)
o Underweight
o Healthy weight
o Overweight
o Obesity
o Adjusted and unadjusted data
o Weighted and unweighted sample size
11 Measuring adult BMI using the Active People Survey
Accessing the LA data
• Continued checks on validity of APS data
• Does ‘error’ in self-reported height and weight differ by ethnic group or socioeconomic status etc?
• What effect does BMI have on self-reported height and weight?
• Requests already received for severe obesity prevalence (BMI ≥40kg/m2)
• Examine prevalence by other variables (e.g. NS-SeC, ethnicity, LLTI, disability, physical activity)
• Investigation of local authority variation
oAge-specific rates
oCharacteristics of areas with high/low prevalence
• Possibility of Sport England producing modelled MSOA data
• Any other suggestions??
12 Measuring adult BMI using the Active People Survey
Future work
