Fig. 2From: Temporal changes in characteristics and external validity of randomized controlled trials in older people from 2012 to 2019Proportion of RCTs specifically designed for older people in 2012 and 2019 (A) and RCTs including a majority of older people in 2012 and 2019 (B). Pie chart showing the proportion of trials specifically designed for older people and trials including a majority of older people. A: Trials were classified as specifically designed for older people if minimum trial participant age ≥ 55 years, or if mean trial participant age ≥ 70 years. B: Trials were classified as including a majority of older people if mean trial participant age ≥ 60 years. Abbreviations: RCT, randomized controlled trialBack to article page