Table 6.

Effect of age

Factor	Age Quintile
	1 (14 to 29; Mean [SD]; n = 166)	2 (30 to 36; Mean [SD]; n = 142)	3 (37 to 42; Mean [SD]; n = 130)	4 (43 to 49; Mean [SD]; n = 109)	5 (50 to 65; Mean [SD]; n = 115)
Women
unadjusted iGFR	113 (22)	112 (19)	110 (21)	105 (19)	96 (20)
iGFR ×1.73/S	114 (19)	112 (18)	109 (19)	103 (18)	95.6 (18)
iGFR/V	3.56 (0.60)	3.50 (0.58)	3.37 (0.58)	3.21 (0.56)	2.97 (0.58)
GFR/M	0.081 (0.013)	0.082 (0.014)	0.081 (0.014)	0.079 (0.014)	0.075 (0.015)
GFR/L	0.078 (0.013)	0.077 (0.013)	0.074 (0.013)	0.070 (0.012)	0.065 (0.013)
V/S	18.50 (0.36)	18.60 (0.34)	18.70 (0.39)	18.60 (0.37)	18.60 (0.32)
V/M	0.023 (0.000)	0.023 (0.000)	0.024 (0.000)	0.025 (0.000)	0.025 (0.000)
M/S	817.0 (13.5)	796.0 (13.8)	779.0 (15.8)	760.0 (16.2)	733.0 (19.0)
S (m2)	1.720 (0.160)	1.730 (0.180)	1.760 (0.180)	1.760 (0.170)	1.740 (0.154)
V (liters)	31.800 (3.500)	32.200 (3.900)	32.900 (3.900)	32.800 (3.700)	32.500 (3.329)
M (kcal/d)	1403 (145)	1380 (167)	1373 (165)	1338 (156)	1279 (142)
L (ml)	1457 (160)	1473 (182)	1501 (177)	1500 (170)	1483 (154)
Men
unadjusted iGFR	127 (23)	124 (22)	124 (22)	121 (20)	111 (23)
iGFR × 1.73/S	110 (17)	107 (17)	105 (16)	103 (15)	94 (18)
iGFR/V	2.71 (0.42)	2.66 (0.42)	2.66 (0.42)	2.62 (0.40)	2.43 (0.47)
GFR/M	0.070 (0.011)	0.069 (0.011)	0.070 (0.011)	0.069 (0.010)	0.065 (0.012)
GFR/L	0.073 (0.011)	0.071 (0.011)	0.070 (0.011)	0.068 (0.010)	0.062 (0.012)
V/S	23.50 (0.62)	23.20 (0.66)	23.00 (0.67)	22.70 (0.64)	22.30 (0.65)
V/M	0.026 (0.001)	0.026 (0.001)	0.026 (0.001)	0.026 (0.000)	0.027 (0.000)
M/S	911.00 (9.43)	891.00 (8.71)	875.00 (8.64)	861.00 (9.64)	838.00 (13.30)
S (m2)	2.00 (0.20)	2.02 (0.17)	2.04 (0.19)	2.05 (0.20)	2.04 (0.16)
V (liters)	46.9 (5.5)	46.8 (5.1)	46.9 (5.4)	46.6 (5.7)	45.5 (4.5)
M (kcal/d)	1818 (174)	1797 (163)	1787 (175)	1762 (188)	1708 (146)
L (ml)	1743 (192)	1762 (175)	1787 (192)	1793 (208)	1783 (161)