Fig. 1From: Associations of changes in late-life blood pressure with cognitive impairment among older population in ChinaSchematic diagram of the analysis relating changes in blood pressure to the risk of cognitive impairment during 3-years interval at different cohorts. Note: For each cohort, changes in blood pressure were calculated as [Follow-up - Baseline], the outcome of interest, cognitive impairment, was identified at the follow-up waveBack to article page