Total daily energy expenditure ( TDEE ) was consistent between the 2 DLW studies ( TDEE1 : 2422 404 kcal/d ; TDEE2 : 2465 408 kcal/d ; intraclass correlation coefficient = 0.90 ) with a mean TDEE of 2443 397 kcal/d that was , on average , 20 % ( 580 kcal/d ) higher in men than in women ( P < 0.0001 ) .