highly significantP < 0·001
When the values for the three studies were pooled, the difference between TG and CG was highly significant ( F (1,117) 24·4, P < 0·001), with no difference between studies ( F (2,117) = 0·02, P = 0·98) and no test meal × study interaction ( F (2,117) 0·02, P = 0·98).