Table 4 A descriptive summary of cognitive function outcomes and BDNF concentration, split by year group and sex. Data are mean ± SD (range)

856 ± 118 (652—1116)

818 ± 141 (611–1211)

644 ± 68 (515–780)

663 ± 81 (516–846)

96.0 ± 5.2 (75.0 – 100)

97.2 ± 3.9 (85.0 – 100)

97.5 ± 4.10(85.0 – 100)

96.3 ± 4.4(85.0 – 100)

1245 ± 229(905 – 1788)

1135 ± 216(799 – 1572)

837 ± 114(658 – 1010)

942 ± 171(680 – 1340)

89.2 ± 7.8(62.5 – 97.5)

93.1 ± 6.3(77.5 – 100)

93.9 ± 4.9 (80.0 – 100)

93.9 ± 7.5 (62.5 – 100)

610 ± 87 (448–801)

631 ± 165 (414–1171)

507 ± 69 (417–687)

491 ± 77 (365–738)

96.9 ± 5.8 (76.7 – 100)

96.5 ± 7.3 (60.0 – 100)

98.1 ± 2.7 (93.3 – 100)

97.8 ± 3.3 (86.7 – 100)

666 ± 107 (468 – 906)

682 ± 185 476 – 1176)

550 ± 57 (461 – 709)

534 ± 88 (406 – 857)

90.2 ± 14.9 (40.0 – 100)

89.6 ± 16.3 (36.7 – 100)

95.2 ± 4.7 (80.0 – 100)

95.5 ± 3.8 (83.3 – 100)

577 ± 93 (412–826)

563 ± 117 (408–896)

465 ± 62 (364–568)

468 ± 80 (363–730)

91.7 ± 12.6 (50.0 – 100)

95.2 ± 7.1 (75.0 – 100)

94.1 ± 6.2 (75.0 – 100)

96.2 ± 6.8 (75.0 – 100)

750 ± 160 (377 – 1110)

692 ± 172 (397 – 1257)

556 ± 62 (463 – 662)

546 ± 87 (294 – 767)

92.8 ± 10.4 (43.8 – 100)

91.5 ± 15.5 (12.5 – 100)

95.5 ± 3.6 (87.5 – 100)

92.4 ± 18.9 (3.1 – 100)

920 ± 171 (445 – 1477)

873 ± 182 (574 – 1594)

677 ± 88 (557 – 882)

677 ± 113 (518 – 130)

86.7 ± 11.5 (50.0 – 100)

90.7 ± 8.4 (62.5 – 100)

92.8 ± 6.4 (81.2 – 100)

93.9 ± 5.9 (81.2 – 100)

592 ± 83 (474 – 819)

579 ± 70 (483 – 830)

512 ± 33 (471 – 568)

536 ± 37 (482 – 605)

92.3 ± 10.9 (47.7 – 100)

95.4 ± 6.9 (65.6 – 100)

96.8 ± 4.6 (84.0 – 100)

97.8 ± 3.3 (91.3 – 100)

1573 ± 408 (777 – 2726)

1577 ± 546 (938 – 3130)

1375 ± 244 (927 – 1936)

1348 ± 324 (910 – 2132)

87.2 ± 22.6 (10.1 – 100)

90.1 ± 18.0 (26.9 – 100)

98.7 ± 4.1 (26.9 – 100)

98.8 ± 3.1 (87.5 – 100)

32.4 ± 8.8 (16.8 – 42.6)

32.7 ± 10.2 (13.3 – 47.9)