Cognitive Impairment and Self-Reported Dementia in UK Retired Professional Soccer Players: A Cross Sectional Comparative Study

Sports Medicine - Open

Table 5 Comparison among source population, questionnaire and cognitive test samples in general population controls

	Source Population	Questionnaires completed	Cognition tested	P-value*
No. participants	1060	619	395	–
Age (years), mean (SD)	68.78 (9.53)	68.07 (10.27)	68.30 (8.91)	.32
BMI (kg/m2), mean (SD)	27.19 (4.27)	26.80 (4.35)	26.94 (4.36)	.19
SES, mean (SD)	6.31 (3.02)	6.59 (2.98)	6.81 (2.94)	.02^#

BMI body mass index, SES Socioeconomic Status, measured according to postcode
*AVOVA test
^#post-hoc paired test showed that the difference was only observed between source population and cognition tested group