The mean difference ( @ % confidence interval ) in GPs ' confidence in abstract findings was @ ( -@ ; @ ) ( P = @ ) for abstracts reporting the funding source only versus no funding source or CoI ; -@ ( -@ ; @ ) ( P = @ ) for abstracts reporting the funding source and CoI versus no funding source and CoI ; and -@ ( -@ ; @ ) ( P = @ ) for abstracts reporting the funding source and CoI versus the funding source only .