Table 4.

The results of total cerebrospinal fluid (CSF) measurements in different age groups and comparisons of the CSF volumes among the age groups separately in men and women.

CSF volume
Male
Age	Number	Mean	SD	Min	Q1	Median	Q3	Max
≤ 45	22	343.4	59.02	260.5	282.6	345.7	393.4	451.1
46–50	37	379.7	64.12	269.3	340.3	364.7	417.8	568.6
51–55	31	384.3	54.81	295.4	345.5	386.4	412.7	504.5
56–60	42	396.1	44.94	309.2	359.9	394.4	431.4	482.8
61–65	54	436.1	58.38	312.6	399.7	428.8	478.0	560.0
66–70	43	450.6	72.18	298.4	401.4	454.9	505.1	575.7
71–75	22	453.1	49.81	336.0	438.7	450.4	473.5	578.4
76–80	13	516.8	67.70	385.6	479.5	522.1	549.9	615.1
Kruskal–Wallis chi-squared = 83, df = 7, p = 0.000000000000003
Age	≤45	46–50	51–55	56–60	61–65	66–70	71–75
46–50	0.16
51–55	0.11	0.73
56–60	0.01*	0.28	0.46
61–65	0.0000*	0.0001*	0.001*	0.006*
66–70	0.0000*	0.0000*	0.0001*	0.0009*	0.46
71–75	0.0000*	0.0001*	0.0003*	0.001*	0.28	0.64
76–80	0.0000*	0.0000*	0.0000*	0.0000*	0.007*	0.03*	0.12
Female
Age	Number	Mean	SD	Min	Q1	Median	Q3	Max
≤ 45	26	301.9	32.95	241.9	280.5	298.6	326.3	367.8
46–50	34	302.2	65.22	184.8	258.9	311.2	325.6	511.4
51–55	58	323.1	41.18	218.0	292.8	325.2	354.8	407.9
56–60	95	323.5	46.79	221.3	293.6	319.2	343.0	464.7
61–65	113	355.5	61.47	235.6	314.6	349.6	387.3	620.6
66–70	63	378.5	61.15	255.9	341.0	374.3	422.5	541.5
71–75	32	404.6	57.81	308.5	364.2	403.1	440.1	552.2
76–80	12	409.3	58.67	331.3	355.4	396.7	448.7	507.9
Kruskal–Wallis chi-squared = 114, df = 7, p < 0.0000000000000002
Age	≤45	46–50	51–55	56–60	61–65	66–70	71–75
46–50	0.73
51–55	0.07	0.13
56–60	0.08	0.14	0.83
61–65	0.0000*	0.0000*	0.002*	0.0002*
66–70	0.0000*	0.0000*	0.0000*	0.0000*	0.01*
71–75	0.0000*	0.0000*	0.0000*	0.0000*	0.0003*	0.13
76–80	0.0000*	0.0000*	0.0001*	0.0000*	0.01*	0.21	0.86

SD, standard deviation; min, minimum value; q1, first quartile; q3, third quartile; max, maximum value.

^*Statistically significant p-values below 0.05.