BMC Medical Informatics and Decision Making

Table 2 Importance of 13 outcomes ranked by average B-W scores

From: Iranian general populations' and health care providers' preferences for benefits and harms of statin therapy for primary prevention of cardiovascular disease

Outcomes	Health care providers = 172					Total population = 913
Outcomes	Total best	Total worst	B-W score	Mean B-W score	Rank	Total best	Total worst	B-W score	Mean B-W score	Rank
Severe stroke	594	0	594	3.45	1	3119	39	3080	3.37	1
Severe MI	467	1	466	2.71	2	2510	29	2481	2.71	2
Cancer	485	24	461	2.68	3	2868	110	2458	2.69	3
Moderate stroke	212	27	185	1.07	4	1040	134	906	0.99	4
Moderate MI	114	61	53	0.31	5	593	289	304	0.33	5
Type 2 diabetes	45	111	− 66	− 0.38	9	326	498	− 172	− 0.19	6
Liver injury	92	85	7	0.04	6	374	594	− 220	− 0.24	7
Acute kidney failure	99	126	− 27	− 0.16	7	496	725	− 229	− 0.25	8
Heart failure	101	142	− 41	− 0.24	8	589	836	− 247	− 0.27	9
Unstable angina	16	218	− 202	− 1.17	10	152	1238	− 1086	− 1.19	10
Treatment discontinuation	4	422	− 418	− 2.43	11	36	2083	− 2047	− 2.24	11
Nausea/headache	3	459	− 456	− 2.65	12	25	2483	− 2458	− 2.69	12
Myopathy	4	560	− 556	− 3.23	13	41	2811	− 2770	− 3.03	13

Outcomes	Urban population = 449					Rural population = 464
Outcomes	Total best	Total worst	B-W score	Mean B-W score	Rank	Total best	Total worst	B-W score	Mean B-W score	Rank
Severe stroke	1526	17	1509	3.36	1	1593	22	1571	3.38	1
Severe MI	1198	16	1182	2.63	3	1312	13	1299	2.80	2
Cancer	1301	38	1263	2.81	2	1267	72	1195	2.57	3
Moderate stroke	540	53	487	1.08	4	500	81	419	0.90	4
Moderate MI	300	119	181	0.40	5	293	170	123	0.26	5
Type 2 diabetes	147	270	− 123	− 0.27	8	179	228	− 49	− 0.11	6
Liver injury	204	278	− 74	− 0.16	6	170	316	− 146	− 0.31	9
Acute kidney failure	250	350	− 100	− 0.22	7	246	375	− 129	− 0.28	8
Heart failure	275	419	− 144	− 0.32	9	314	417	− 103	− 0.22	7
Unstable angina	71	610	− 539	− 1.20	10	81	628	− 547	− 1.18	10
Treatment discontinuation	8	1005	− 997	− 2.22	11	28	1078	− 1050	− 2.26	11
Nausea/headache	9	1271	− 1262	− 2.81	12	16	1212	− 1196	− 2.58	12
Myopathy	8	1391	− 1383	− 3.08	13	33	1420	− 1387	− 2.99	13

The results are based on the number of times each item was chosen as "best" and the number of times chosen as "worst" across participants. We generated 13 choice sets with four outcomes in each choice set so that each outcome coexisted with another one just once. To analyze item importance, we used the average of "Best minus Worst (B-W)"

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