Fig. 2

Correlation between subjective and objective cognitive function. Spearman’s rank correlation coefficient was calculated for CFQ and four of the CANTAB outcome measures at all time points. a Plots of CFQ scores and % correct on the PRM test; r = − 0.134, p = 0.408, 95% CI [− 0.428, 0.185] at 3 months; r = − 0.106, p = 0.483, 95% CI [− 0.384, 0.190] at 6 months; r = − 0.070, p = 0.664, 95% CI [− 0.370, 0.243] at 12 months. b Plots of CFQ scores and the outcome measure RVP A’; r = − 0.018, p = 0.915, 95% CI [− 0.331, 0.300] at 3 months; r = − 0.084, p = 0.596, 95% CI [− 0.378, 0.226] at 6 months; r = − 0.067, p = 0.695, 95% CI [− 0.382, 0.263] at 12 months. c Plots of CFQ scores and number of tests with minimum moves completed in the SOC test; r = 0.207, p = 0.200, 95% CI [− 0.112, 0.487] at 3 months; r = 0.066, p = 0.667, 95% CI [− 0.232, 0.353] at 6 months; r = − 0.028, p = 0.864, 95% CI [− 0.332, 0.282] at 12 months. d Plots of CFQ scores and span length achieved on the SSP test; r = − 0.023, p = 0.890, 95% CI [− 0.332, 0.291] at 3 months; r = 0.257, p = 0.085, 95% CI [− 0.036, 0.509] at 6 months; r = − 0.109, p = 0.498, 95% CI [− 0.403, 0.206] at 12 months. No statistical significance was reached. CFQ, Cognitive Failures Questionnaire; CANTAB, Cambridge Neuropsychological Test Automated Battery; PRM, pattern recognition memory; RVP, rapid visual information processing; SOC, Stockings of Cambridge; SSP, spatial span; CI, confidence interval