Table 3. Means and standard deviations for the volumes of gray matter, white matter, cerebrospinal fluid, and total brain (cm3) for the whole magnetic resonance imaging sample and separately for men and women*.

	Whole sample					Men					Women
Age group	N	GMV	WMV	CSF	TBV	N	GMV	WMV	CSF	TBV	N	GMV	WMV	CSF	TBV
Total	29 798	648.15 (62.95)	468.32 (58.28)	304.12 (62.20)	1143.92 (116.95)	16 647	679.57 (55.67)	495.84 (52.73)	327.03 (60.14)	1203.82 (102.06)	13 151	608.38 .(47.17)	433.49 (44.78)	275.11 (51.80)	1068.10 (86.69)
20–29	3109	699.07 (63.45)	468.79 (58.09)	249.41 (44.15)	1195.67 (118.44)	185	732.92 (52.61)	496.18 (51.66)	267.55 (41.35)	1258.04 (99.43)	1324	653.42 (45.76)	431.86 (44.18)	224.95 (35.09)	1111.58 (85.44)
30–39	3553	677.67 (61.25)	477.81 (58.21)	266.94 (46.30)	1183.62 (116.32)	2102	709.93 (49.22)	504.64 (51.70)	286.70 (40.69)	1243.79 (95.78)	1451	630.94 (44.57)	438.95 (43.26)	238.33 (38.29)	1096.45 (83.66)
40–49	8780	653.04 (58.44)	475.94 (58.11)	293.45 (49.25)	1156.92 (113.90)	4930	685.70 (47.88)	504.35 (51.89)	313.91 (44.27)	1219.10 (95.32)	3850	611.23 (41.70)	439.55 (43.53)	267.24 (42.43)	1077.30 (81.62)
50–59	8240	636.61 (55.23)	469.65 (57.29)	316.35 (55.38)	1133.73 (109.71)	4526	665.60 (47.47)	496.84 (51.74)	341.61 (50.06)	1190.78 (94.77)	3714	601.28 (41.82)	436.52 (44.95)	285.55 (45.00)	1064.20 (83.43)
60–69	5704	614.37 (53.53)	450.65 (55.80)	350.12 (62.31)	1091.22 (105.98)	3061	642.79 (46.46)	477.30 (50.93)	382.10 (54.81)	1146.94 (92.69)	2643	581.46 (40.82)	419.79 (44.05)	313.07 (48.41)	1026.69 (80.83)
70–74	412	603.77 (49.57)	438.77 (55.52)	383.48 (66.28)	1067.72 (101.81)	243	624.45 (45.22)	459.33 (53.06)	413.91 (58.15)	1109.43 (94.48)	169	574.04 (39.47)	409.22 (44.68)	339.71 (51.09)	1007.74 (79.78)

* The overall mean values across all age groups (20–74 years) and the means for the individual decades

CSF, Cerebrospinal fluid volume; GMV, gray matter volume; TBV, total brain volume; WMV, white matter volume