Health effects and cost-effectiveness of a multilevel physical activity intervention in low-income older adults; results from the PEP4PA cluster randomized controlled trial. - Crist, Katie; Full, Kelsie M.; Linke, Sarah; Tuz-Zahra, Fatima; Bolling, Khalisa; Lewars, Brittany; Liu, Chenyu; Shi, Yuyan; Rosenberg, Dori; Jankowska, Marta; Benmarhnia, Tarik; Natarajan, Loki (International Journal of Behavioral Nutrition & Physical Activity, 2022)