Development and validation of the living with pulmonary hypertension questionnaire in pulmonary arterial hypertension patients

Table 6 Summary of LPH Properties

Dimension	Structural properties of the LPH				Percentages of patients having the lowest or highest possible LPH scores						Internal consistency reliability of LPH scores
	# of items	Range of item-scale correlations	% of items meeting convergent validity criterion ¹	% of items meeting discriminant validity criterion ²	Lowest possible score	Highest possible score	Baseline LPH population (N=190)		Visit 6/last visit LPH population (N=176)		Baseline		Visit 6/last visit
	# of items	Range of item-scale correlations	% of items meeting convergent validity criterion ¹	% of items meeting discriminant validity criterion ²	Lowest possible score	Highest possible score	N (%) at floor	N (%) at ceiling	N (%) at floor	N (%) at ceiling	N	Cronbach’s Alpha	N	Cronbach’s Alpha
LPH Emotional score	5	0.59-0.76	100%	100%	0	25	16 (8.42%)	6 (3.16%)	16 (9.09%)	2 (1.14%)	189	0.87	176	0.87
LPH Physical score	8	0.43-0.78	100%	100%	0	40	4 (2.11%)	0 (0.00%)	0 (0.00%)	0 (0.00%)	190	0.89	175	0.90
LPH Total score	21	0.38-0.72	90%	100%	0	105	2 (1.05%)	0 (0.00%)	0 (0.00%)	0 (0.00%)	185	0.92	171	0.92

¹ Correlation between each item and its own scale corrected for overlap should be at least 0.40.
² Each item should correlated significantly higher with its hypothesized scale than with the other scale in the measure.

ISSN: 1477-7525