Fig. 1From: Research diagnostic criteria for Alzheimer’s disease: findings from the LipiDiDiet randomized controlled trialBaseline biomarker profiles according to the A/T/N classification scheme among participants with available CSF. A+ refers to abnormal Aβ CSF Aβ42 < 450 pg/ml and/or CSF Aβ42/40 ratio < 1, T+ to abnormal p-tau (CSF p-tau > 60 pg/ml), and N+ to abnormal t-tau (CSF t-tau > 350 pg/ml) and/or MTA (visual rating, score ≥ 1)Back to article page