^g Intake measured as mg/1000 kcal; energy intake not provided.

^h Abnormal EGRAC = > 1.2.

ⁱ During exercise period.

^j Abnormal EGRAC = > 1.25.

^k Abnormal EGRAC = ≥ 1.3.

^l Abnormal EGRAC = > 1.4.

^m Abnormal urinary excretion = values before which there is a sharp increase (breakpoint for increase in slope of urinary excretion).

ⁿ Normal = no classical signs of riboflavin deficiency.

^o Normal = no signs of ariboflavinosis (assessment based on eye exams, work performance, and psychomotor tests).

^p Abnormal = nonspecific symptoms (cheilosis, angular stomatitis, scrotal skin changes).

^q Abnormal = severe skin lesions.

^r Abnormal total erythrocyte riboflavin = < 400 nmol/L (15 µg/100 mL); authors’ conclusion.

^s Normal total erythrocyte riboflavin = ≥ 530 nmol/L (20 µg/100 mL); authors’ conclusion.

^t Abnormal = severe symptoms of ariboflavinosis.