Variable | 2011 | 2013 | 2015 | ||||||
---|---|---|---|---|---|---|---|---|---|
No. of participants | Mean ± SD | P valuea | No. of participants | Mean ± SD | P valuea | No. of participants | Mean ± SD | P valuea | |
Cognitive score | Â | F = 127.77, P < 0.001b | |||||||
Total | 9384 | 10.17 ± 4.34 |  | 9132 | 10.31 ± 4.36 |  | 9048 | 9.80 ± 4.46 |  |
Age, years | |||||||||
 45–59 | 5071 | 10.99 ± 4.08 | <0.001 | 5015 | 11.20 ± 4.07 | <0.001 | 5068 | 10.73 ± 4.15 | <0.001 |
 60–64 | 1731 | 10.26 ± 4.21 |  | 1711 | 10.29 ± 4.15 |  | 1704 | 9.77 ± 4.34 |  |
 65–79 | 2351 | 8.76 ± 4.39 |  | 2248 | 8.67 ± 4.49 |  | 2138 | 7.93 ± 4.49 |  |
 80+ | 231 | 5.95 ± 3.98 |  | 158 | 5.82 ± 4.30 |  | 138 | 4.96 ± 4.04 |  |
Sex | |||||||||
 Male | 4349 | 11.19 ± 3.93 | <0.001 | 4253 | 11.34 ± 3.92 | <0.001 | 4204 | 10.77 ± 4.05 | <0.001 |
 Female | 5030 | 9.29 ± 4.53 | 4873 | 9.42 ± 4.53 |  | 4839 | 8.97 ± 4.62 |  | |
Pulse pressure | F = 11.09, P < 0.001b | ||||||||
Total | 8853 | 54.98 ± 15.06 |  | 7668 | 55.47 ± 14.87 |  | 8171 | 54.51 ± 14.59 |  |
Age years | |||||||||
 45–59 | 4563 | 50.38 ± 11.87 | <0.001 | 4112 | 50.90 ± 11.96 | <0.001 | 4492 | 50.06 ± 11.78 | <0.001 |
 60–64 | 1590 | 55.87 ± 14.42 |  | 1482 | 56.78 ± 14.30 |  | 1528 | 56.35 ± 13.92 |  |
 65–79 | 2185 | 62.29 ± 16.82 |  | 1957 | 62.86 ± 16.48 |  | 1992 | 61.88 ± 16.06 |  |
 80+ | 215 | 71.71 ± 18.38 |  | 171 | 69.64 ± 17.82 |  | 159 | 70.44 ± 20.12 |  |
Sex | |||||||||
 Male | 3972 | 54.31 ± 13.71 | <0.001 | 3577 | 55.11 ± 13.92 | 0.045 | 3768 | 54.12 ± 14.00 | 0.026 |
 Female | 4577 | 55.56 ± 16.11 | 4086 | 55.78 ± 15.63 | 4397 | 54.84 ± 15.07 |