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. 2022 Oct 4;93(12):1262–1268. doi: 10.1136/jnnp-2022-329675

Table 1.

Cohort demographic information

Former international rugby players
(n=412)
Matched population comparison group
(n=1236)
Number (%)
SIMD quintile
 1 11 (2.7) 33 (2.7)
 2 41 (10.0) 123 (10.0)
 3 66 (16.0) 198 (16.0)
 4 127 (30.8) 381 (30.8)
 5 167 (40.5) 501 (40.5)
Player position
Forward 222 (53.9) N/A
 Front row 96 (23.3) N/A
 Lock 40 (9.7) N/A
 Back row 86 (20.9) N/A
Backs 190 (46.1) N/A
 Half backs 58 (14.1) N/A
 Three quarters 111 (26.9) N/A
 Fullback 21 (5.1) N/A
Year of birth
 1900–1919 47 (11.5) 141 (11.5)
 1920–1939 91 (22.1) 273 (22.1)
 1940–1959 89 (21.6) 267 (21.6)
 1960–1979 109 (26.4) 327 (26.4)
 1980–1990 76 (18.5) 228 (18.5)

N/A, not applicable; SIMD, Scottish Index of Multiple Deprivation.