Level of severity (l)

1

…

2

k

Total


Sample Y

\( {f}_Y^{(1)} \)

…

\( {f}_Y^{\left(k1\right)} \)

\( {f}_Y^{(k)} \)

n_{y}

Sample X

\( {f}_X^{(1)} \)

…

\( {f}_X^{\left(k1\right)} \)

\( {f}_X^{(k)} \)

n_{x}

Total

t_{1}

…

t_{k − 1}

t_{k}

N = n_{y} + n_{x}

 k is the number of the dimension levels, i.e., k = 3 and k = 5 for EQ5D3 L and EQ5D5 L, respectively. Levels L_{1}, …, L_{k} are ordered from least to most severe. For each level \( l=1,\dots, k,{f}_Y^{(l)}\;\mathrm{and}\;{f}_X^{(l)} \) denote the observed frequencies of the Y and X samples, respectively