Public release of hospital quality data for referral practices in Germany: results from a cluster-randomised controlled trial

Table 4 The usefulness of the NHQRS (p value was calculated using Mann-Whitney U)

Rating	Overall (n ^ph=277)	General practitioner (n ^ph=126)	Specialist (n ^ph=151)	p
Overall rating^a	3.67 (1.40)	3.37 (1.37)	3.92 (1.38)	.002
Detailed rating categories^b
Trustworthiness^b	2.68 (1.08)	2.89 (0.99)	2.50 (1.12)	.003
Helpfulness^b	2.49 (1.16)	2.77 (1.15)	2.25 (1.12)	<.001
Credibility^b	2.85 (1.08)	3.03 (1.03)	2.69 (1.10)	.009
Informative value^b	2.65 (1.14)	2.87 (1.14)	2.47 (1.11)	.004
Version 1 (overall ranking, 3–5 performance groups)
Helpfulness^b	2.69 (1.34)	3.05 (1.30)	2.38 (1.29)	<.001
Likely impact on future referral practice^b	2.29 (1.33)	2.66 (1.31)	1.98 (1.26)	<.001
Version 2 (alphabetical order; categorical overall performance)
Helpfulness^b	2.43 (1.24)	2.66 (1.21)	2.23 (1.23)	.004
Likely impact on future referral practice^b	2.11 (1.18)	2.38 (1.19)	1.88 (1.13)	<.001
Version 3 (alphabetical order; detailed quality indicator-based information)
Helpfulness^b	2.35 (1.27)	2.64 (1.30)	2.10 (1.20)	.001
Likely impact on future referral practice^b	2.22 (1.25)	2.56 (1.29)	1.92 (1.13)	<.001

^aGerman school-based rating system; 1 to 6 scale (1 = very good; 2 = good; 3 = satisfactory; 4 = sufficient; 5 = deficient; 6 = insufficient)
^b1 to 5 scale (1 = not trustworthy etc. at all; 5 = very trustworthy etc.)

ISSN: 2191-1991