Measuring adult BMI using the Active People Survey Caroline Hancock | SEPHIG 26 March 2014.

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

Questions and discussion

[email protected]

13 Measuring adult BMI using the Active People Survey