Table 2.

Plasma apolipoprotein-E levels (mg/dl) in residents of the European North of Russia by sex and age

Age group	Men	Women	p1value
Total	2.80 (1.97; 3.72)	2.87 (2.07; 3.65)	0.652
13-60 years	n = 463	n = 474
1 group	2.70 (1.91; 3.84)	2.96 (1.94; 3.68)	0.886
13-15 years	n = 71	n = 80
2 group	2.19 (1.57; 3.00) *1-2	2.52 (1.64; 3.29)	0.147
17-21 years	n = 97	n = 101
3 group	2.35 (1.66; 3.08)	2.45 (1.87; 3.25)	0.262
22-35 years	n = 101	n = 107
4 group	2.98 (2.23; 3.73) **2-4; 3-4	3.15 (2.32; 3.86) **2-4; 3-4	0.309
36-45 years	n = 90	n = 85
5 group	3.50 (2.88; 4.07) *1-5; **2-5; 3-5	3.11 (2.39; 3.95) **2-5; 3-5	0.094
46-60 years	n = 104	n = 101
p2value	<0.001	<0.001

Data are expressed as median (interquartile range).

p¹value; Statistical significance of differences between men and women was estimated using the Mann-Whitney test.

p²value; Statistical significance of differences between age groups was estimated using the Kruskal-Wallis test. Differences between age groups are statistically significant at: * - p < 0.05; ** - p < 0.01 (the Mann-Whitney test with Bonferroni correction).