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Impacts of Food Hypersensitivities on Quality of Life in the UK and Willingness to Pay (WTP) to remove those impacts

Appendix J. Current and Contingent EQ5D and VAS, additional analysis

Additional analysis of Current and Contingent EQ5D and VAS

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Table 1. Adult respondents reporting the domain level for each FHS and for multiple FHS 

Domain Level % of respondents reporting: Food Allergy % of respondents reporting: Coeliac Disease % of respondents reporting: Food Intolerance % of respondents reporting: Multiple % of respondents reporting: Total
Mobility 1 69.34 77.36 60.55 52.33 66.62
Mobility 2 17.15 15.94 19.45 27.60 19.35
Mobility 3 7.66 4.13 13.42 12.54 8.84
Mobility 4 5.47 2.36 6.30 7.17 4.91
Mobility 5 0.36 0.20 0.27 0.36 0.28
Selfcare 1 85.04 94.88 78.08 77.06 85.20
Selfcare 2 5.47 3.15 13.15 13.62 8.20
Selfcare 3 7.66 1.57 6.85 8.24 5.40
Selfcare 4 1.09 0.39 1.92 1.08 1.05
Selfcare 5 0.73 0.00 0.00 0.00 0.14
Usual Activity 1 65.33 71.65 56.44 43.01 60.94
Usual Activity 2 17.15 19.29 23.84 29.03 21.95
Usual Activity 3 10.95 6.89 12.60 18.28 11.36
Usual Activity 4 4.01 2.17 6.85 8.96 5.05
Usual Activity 5 2.55 0.00 0.27 0.72 0.70
Pain 1 55.84 66.34 47.95 44.80 55.40
Pain 2 23.36 25.00 29.04 29.39 26.58
Pain 3 14.60 6.50 15.34 16.85 12.34
Pain 4 4.74 1.57 4.93 7.17 4.14
Pain 5 1.46 0.59 2.74 1.79 1.54
Anxiety 1 43.43 52.56 42.74 35.13 44.88
Anxiety 2 27.74 33.27 28.49 37.63 31.84
Anxiety 3 18.61 11.02 17.26 21.15 16.06
Anxiety 4 8.03 2.56 7.40 5.38 5.40
Anxiety 5 2.19 0.59 4.11 0.72 1.82

Table 2. Adult respondents reporting the domain level for the worst FHS or only FHS

Domain Level % of respondents reporting: Food Allergy % of respondents reporting: Coeliac Disease % of respondents reporting: Food Intolerance % of respondents reporting: Multiple
Mobility 1 65.19 73.88 57.95 66.62
Mobility 2 20.00 17.97 20.68 19.35
Mobility 3 8.05 5.32 14.32 8.84
Mobility 4 6.49 2.50 6.82 4.91
Mobility 5 0.26 0.33 0.23 0.28
Selfcare 1 83.64 93.01 75.91 85.20
Selfcare 2 7.27 4.33 14.32 8.20
Selfcare 3 7.27 2.16 8.18 5.40
Selfcare 4 1.30 0.50 1.59 1.05
Selfcare 5 0.52 0.00 0.00 0.14
Usual Activity  1 60.52 67.22 52.73 60.94
Usual Activity  2 20.00 21.30 24.55 21.95
Usual Activity  3 12.47 8.99 13.64 11.36
Usual Activity  4 5.19 2.33 8.64 5.05
Usual Activity  5 1.82 0.17 0.45 0.70
Pain 1 53.25 63.06 46.82 55.40
Pain 2 25.71 26.62 27.27 26.58
Pain 3 14.55 7.82 16.59 12.34
Pain 4 4.68 2.00 6.59 4.14
Pain 5 1.82 0.50 2.73 1.54
Anxiety 1 40.26 50.42 41.36 44.88
Anxiety 2 31.43 34.11 29.09 31.84
Anxiety 3 19.22 12.48 18.18 16.06
Anxiety 4 7.53 2.50 7.50 5.40
Anxiety 5 1.56 0.50 3.86 1.82

Figure 1. Reported domain levels for the adult respondents compared with the UK population

Annex J Figure 1

Table 3. Reported domain levels for the adult respondents compared with the UK population

Domain Level Sample: Frequency Sample: Percent UK Population: Frequency UK Population: Percent
Mobility 1 950 66.6 737 74.0
Mobility 2 276 19.4 113 11.3
Mobility 3 126 8.8 80 8.0
Mobility 4 70 4.9 58 5.8
Mobility 5 4 0.3 8 0.8
Selfcare 1 1215 85.2 861 92.1
Selfcare 2 117 8.2 39 4.2
Selfcare 3 77 5.4 26 2.8
Selfcare 4 15 1.1 7 0.7
Selfcare 5 2 0.1 2 0.2
Usual Activity 1 869 60.9 708 75.7
Usual Activity 2 313 21.9 122 13.0
Usual Activity 3 162 11.4 77 8.2
Usual Activity 4 72 5.0 22 2.4
Usual Activity 5 10 0.7 6 0.6
Pain 1 526 36.9 426 45.5
Pain 2 526 36.9 293 31.3
Pain 3 272 191.1 159 17.0
Pain 4 76 5.3 45 4.8
Pain 5 26 1.8 13 1.4
Anxiety 1 640 44.9 442 47.2
Anxiety 2 454 31.8 266 28.4
Anxiety 3 229 16.1 162 17.3
Anxiety 4 77 5.4 47 5.0
Anxiety 5 26 1.8 20 2.1

Source: UK population values taken from Feng, Y., Devlin, N., & Herdman, M. (2015). Assessing the health of the general population in England: how do the three- and five-level versions of EQ-5D compare?. Health and quality of life outcomes, 13, 171.

Figure 2. Scatter plot of calculated baseline and contingent health utility score from the EQ5D-5 L for adults

Annex J Figure 2

Footnote: Matrix of correlations 

Variables (1) baseline health (2) contingent health
(1) baseline health 1.000 -
(2) contingent health 0.889 1.000

Figure 3. Scatter plot of calculated baseline and contingent health utility score from the EQ-VAS for adults

Annex J Figure 3

Footnote: Matrix of correlations 

Variables (1) baseline health (2) contingent health
(1) baseline health 1.000 -
(2) contingent health 0.86 1.000

Table 4. Parent proxy values for children reporting the domain level for each FHS and for multiple FHS

Domain Level % of respondents reporting the level: Food Allergy % of respondents reporting the level: Coeliac Disease % of respondents reporting the level: Food Intolerance % of respondents reporting the level: Multiple Total
Mobility 1 90.88 67.86 91.30 75.71 86.99
Mobility 2 7.98 25.00 6.96 20.00 10.81
Mobility 3 1.14 7.14 1.74 4.29 2.20
Selfcare 1 85.19 71.43 84.35 71.43 82.09
Selfcare 2 13.39 25.00 13.04 24.29 15.71
Selfcare 3 1.42 3.57 2.61 4.29 2.20
Usual Activity  1 82.05 66.07 75.65 58.57 76.52
Usual Activity  2 14.81 26.79 20.00 34.29 19.26
Usual Activity  3 3.13 7.14 4.35 7.14 4.22
Pain 1 74.07 48.21 54.78 41.43 64.02
Pain 2 23.36 48.21 40.87 52.86 32.60
Pain 3 2.56 3.57 4.35 5.71 3.88
Anxiety 1 61.25 46.43 57.39 38.57 56.42
Anxiety 2 33.05 46.43 34.78 44.29 35.98
Anxiety 3 5.70 7.14 7.83 17.14 7.60

Table 5. Parent proxy values for children reporting the domain level for each FHS and for the worst FHS or only FHS

Domain Level % of respondents reporting the level: Food Allergy % of respondents reporting the level: Coeliac Disease % of respondents reporting the level: Food Intolerance % of respondents reporting the level: Multiple
Mobility 1 90.00 70.15 86.40 86.99
Mobility 2 8.75 22.39 11.20 10.81
Mobility 3 1.25 7.46 2.40 2.20
Selfcare 1 83.75 71.64 82.40 82.09
Selfcare 2 14.00 26.87 15.20 15.71
Selfcare 3 2.25 1.49 2.40 2.20
Usual Activity 1 79.50 65.67 72.80 76.52
Usual Activity 2 17.25 26.87 21.60 19.26
Usual Activity 3 3.25 7.46 5.60 4.22
Pain 1 70.75 49.25 50.40 64.02
Pain 2 26.75 47.76 43.20 32.60
Pain 3 2.50 2.99 6.40 3.38
Anxiety 1 59.00 41.79 56.00 56.42
Anxiety 2 34.50 49.25 33.60 35.98
Anxiety 3 6.50 8.96 10.40 7.60

Figure 4. Reported domain levels for a child as valued by a parent compared with the UK population

Annex J Figure 4

Table 6. Reported domain levels for a child as valued by a parent compared with the UK population

Domain Sample: Level Sample: Frequency Sample: Percent UK Population: Frequency UK Population: Percent
Mobility 1 950 66.6 950 86.99
Mobility 2 276 19.4 46 10.81
Mobility 3 126 8.8 9 2.20
Selfcare 1 1215 85.2 953 82.09
Selfcare 2 117 8.2 46 15.71
Selfcare 3 77 5.4 6 2.20
Usual Activity 1 869 60.9 916 76.52
Usual Activity 2 313 21.9 80 19.26
Usual Activity 3 162 11.5 9 4.22
Pain 1 526 36.9 865 64.02
Pain 2 526 36.9 131 32.60
Pain 3 272 19.1 9 3.38
Anxiety 1 640 44.9 660 56.42
Anxiety 2 454 31.8 322 35.98
Anxiety 3 229 16.1 23 7.60

Source: UK population values taken from EQ5D-Youth

Figure 5. Scatter plot of calculated baseline and contingent health utility score from the EQ5D-3L (proxy) 

Annex J Figure 5

Footnote: Matrix of correlations 

Variables (1) baseline health (2) contingent health
(1) baseline health 1.000 -
(2) contingent health 0.75 1.000

Figure 6. Scatter plot of calculated baseline and contingent health utility score from the EQ-VAS (proxy)

Annex J Figure 6

Footnote: Matrix of correlations 

Variables  (1) baseline health (2) contingent health
(1) baseline health 1.000 -
(2) contingent health 0.68 1.000

 

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