Table 4

Inter-item and item-total correlations

Inter-item correlations:
*Figures in parentheses correspond to item numbers of the measure (appendix, available to view on the journal web site http://www.jech.com/supplemental).
†An item-total correlation is the correlation of the individual item with the scale total omitting that item.
q1 (1)* 1.0
q2 0.79241.0
q4a 0.47920.46361.0
q4b (2) 0.49980.42280.78111.0
q4c 0.52680.48580.75030.74811.0
q4d 0.43280.41640.74580.70640.83171.0
q5 (3) 0.60800.58080.71720.74530.68150.66331.0
q6 (4) 0.51700.46880.73170.81400.68700.68590.81371.0
q7 (5) 0.52920.49550.72250.75920.72850.66700.80420.76451.0
q8 0.48070.43950.70250.69340.67840.63030.69760.72590.78241.0
q9 (6) 0.41340.37900.51250.53510.47730.46460.62410.54640.55640.54461.0
q1(1) q2 q4a q4b(2) q4c q4d q5(3) q6(4) q7(5) q8 q9(6)
Item-totals† 0.63690.59150.82100.83540.81570.77160.86410.84290.84980.78920.6165