Table 1.

Analysis of variance results: mean values (95% confidence intervals) and significance levels relating to competing interest

	Competing interest
Scored variable	None declared (n=174)	Financial statement (n=192)	Grants statement (n=156)	P value
Interest	3.21 (3.07 to 3.35)	3.06 (2.93 to 3.20)	3.26 (3.11 to 3.41)	0.12
Importance	3.29 (3.15 to 3.43)	3.03 (2.90 to 3.17)	3.16 (3.01 to 3.31)	0.035*
Relevance	3.44 (3.29 to 3.60)	3.13 (2.99 to 3.27)	3.35 (3.19 to 3.52)	0.009*
Validity	3.16 (3.01 to 3.30)	2.82 (2.69 to 2.96)	3.12 (2.96 to 3.27)	<0.001†
Believability	3.49 (3.33 to 3.64)	3.20 (3.05 to 3.34)	3.36 (3.20 to 3.52)	0.025*

^*Rating for “financial statement” significantly lower than that for “none declared.”

^†Rating for “financial statement” significantly lower than that for “none declared” and for “grants statement.”