Table 2 Summary of ordinary least-square regression on valuation score of SF-6D health states

The most severe state worse than dead (D₁)

2.0

[0.2, 3.8]

0.029

The most severe state (D₂)

−12.3

[−15.8, −8.8]

<0.001

Interaction of D₁ and D₂

−14.7

[−16.6, −12.9]

<0.001

At least one severe level (N₃)

−2.3

[−4.3, −0.4]

0.018

Physical functioning level 2

−7.5

[−16.6, −12.9]

<0.001

Physical functioning level 3

−7.9

[−9.7, −6.0]

<0.001

Physical functioning level 4

−13.8

[−15.8, −11.7]

<0.001

Physical functioning level 5

−13.9

[−15.9, −11.9]

<0.001

Physical functioning level 6

−22.1

[−24.4, −19.9]

<0.001

Role limitations level 2

−3.7

[−5.2, −2.2]

<0.001

Role limitations level 3

−3.1

[−4.6, −1.6]

<0.001

Role limitations level 4

−2.7

[−4.3, −1.0]

0.002

Social functioning level 2

−3.1

[−4.6, −1.5]

<0.001

Social functioning level 3

−2.1

[−3.8, −0.4]

0.015

Social functioning level 4

−2.9

[−4.8, −1.1]

0.002

Social functioning level 5

−3.2

[−5.1, −1.4]

0.001

Pain level 2

−3.9

[−5.7, −2.2]

<0.001

Pain level 3

−6.3

[−8.1, −4.5]

<0.001

Pain level 4

−6.8

[−8.6, −4.9]

<0.001

Pain level 5

−7.5

[−9.2, −5.7]

<0.001

Pain level 6

−11.1

[−13.0, −9.2]

<0.001

Mental health level 2

−2.1

[−3.8, −0.4]

0.016

Mental health level 3

−2.8

[−4.7, −1.0]

0.002

Mental health level 4

−4.0

[−5.9, −2.1]

<0.001

Mental health level 5

−3.0

[−4.9, −1.1]

0.002

Vitality level 2

−0.3

[−2.1, 1.6]

0.785

Vitality level 3

−5.0

[−6.9, −3.2]

<0.001

Vitality level 4

−5.6

[−7.6, −3.6]

<0.001

Vitality level 5

−10.6

[−12.6, −8.6]

<0.001

Intercept

80.2

[77.3, 83.1]

<0.001

R² = 0.519