To validate this cough severity scale, we also added four questions of the Leicester Cough Questionnaire [ 9], using the Dutch version [ 10], to correlate these scores with the cough severity scale.
In the ABCD study, maternal mental distress was assessed on the basis of anxiety symptoms, measured by the validated State-Trait Anxiety Inventory (STAI) [ 42], and depressive symptoms using the validated Dutch version of the Center for Epidemiological Studies Depression Scale (CES-D) [ 43].
Anxiety of the patient was measured using the validated Dutch version of the State-Trait Anxiety Inventory (STAI) before and after the procedure.
Depressive symptoms were measured using the validated Dutch version of the 20-item Centre for Epidemiologic Studies Depression Scale (CES-D) [17].
Depressive symptoms were assessed using the validated Dutch version of the 20-item Center for Epidemiological Studies Depression Scale (CES-D) [ 30, 31].
Pre- and post-visit perceived control was assessed using the validated Dutch version of the Perceived Personal Control questionnaire (PPC) [ 28, 32].
The five item questionnaire covers positive mood (good spirits, relaxation), vitality (being active and waking up fresh and rested), and general interest (being interested in things) [ 24]. – Self-management behaviour of the patient is assessed using the validated Dutch version of Glasgow's Diabetes Self-Care Activities Measure.
The EQ-5D descriptive system comprises the following five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression [ 22]. – General psychological well-being will be assessed using the validated Dutch version of the self-report WHO-Five Well-being Index [ 23].
We used the validated Dutch version of PAM-13 to determine the convergent construct validity, hypothesising that the better the score on the SeMaS (i.e. having fewer barriers to self-management), the higher the score on PAM-13 [ 34].
