Fig. 4
Correlation matrix of key variables. Pearson coefficients (r) are given for correlations between series variables, and Spearman rho (rs) are given for correlations with at least one ordinal variable. The bordered cells are correlations of particular interest, which are discussed in greater detail in the text. Statistically significant correlations (p<0.05) are indicated in bold. The up and down arrows show the direction at the positive end of the scale. For example, more satisfaction for comfort was ranked higher (↑), and more discomfort was ranked lower (↓). Variables are ordered by their absolute correlation score summed across all comparisons