Effectiveness and patient satisfaction of a Dutch patient decision aid for psoriasis – a pilot study

Figures & data

Figure 1. (a) Stacked bar chart SDM-Q-9 per item before and after introduction of the intervention. (b) Stacked bar chart SDM-Q-Doc per item before and after introduction of the intervention.

Table 1. Chosen treatment and effectiveness before-and-after study.

	Before study (n = 15)	After study (n = 15)	Total (n = 30)
Chosen treatment
Continue current treatment, n (%)	2 (13.3)	0 (0)	2 (6.9)
Methotrexate, n (%)	3 (20)	0 (0)	3 (10.4)
Biologics, n (%)	6 (40)	11 (78.6)	17 (58.6)
Other^a, n (%)	4 (26.7)	3 (21.4)	7 (24.1)
	Before study (n = 15)	After study (n = 15)	p Value
Primary outcome
OPTION^5, mean (SD)	37.0 (21.3)	34.3 (13.1)	.68
Secondary outcomes
SDM-Q-9, median (IQR)	91.1 (75.6–95.6)	84.4 (75.6–88.9)	.27
SDM-Q-Doc, median (IQR)	75.6 (64.4–86.7)	71.1 (60.0–77.8)	.217
CollaboRATE, mean (SD)	88.1 (11.1)	86.7 (14.1)	.77
VAS patient satisfaction, mean (SD)	8.0 (0.9)	8.1 (1.5)	.76
Decisional Conflict Scale, mean (SD)	37.8 (11.8)	37.8 (5.3)	1.0

Note: n: number of patients; OPTION: observing patient involvement in decision making questionnaire; SD: standard deviation; SDM-Q-9 = 9-item Shared Decision Making Questionnaire; SDM-Q-Doc: Shared Decision Making Questionnaire for physicians; VAS: Visual Analogue Scale.

^aPhoto-therapy or postpone decision.

Data availability statement

Our data is available on request. Data will be shared with researchers who provide a methodologically sound proposal after execution of a data-sharing agreement.