NCT03320668.

Trial name or title	Efficacy of the Otago Exercise Program delivered as group training versus individually‐tailored training
Methods	RCT
Participants	Target sample size: 728 Inclusion criteria: 65 ‐ 80 years, people who belong (ascribed) to primary healthcare centres of the same health area, non‐institutionalised, independence for walking, provide informed consent for participation Exclusion Criteria: residential period in the Health Basic Area of the primary health centre < 9 months, or < 9 months life expectancy in the health area of the primary healthcare centre; mild and moderate cognitive impairment; sight impairment or hearing impairment which prevents following the intervention (according to the diagnosis from medical history); absolute contraindication to perform physical exercise (according to the diagnosis from medical history)
Interventions	1. Individual Otago Exercise Program (OEP): individual education in 5 sessions + telephone call to follow‐up 2. Group OEP: OEP education to 10 people groups in 5 sessions + telephone calls to follow‐up
Outcomes	1. Percentage of falls, 12 months 2. Adverse events 3. Adherence 4. Participant satisfaction
Starting date	10 January 2017
Contact information	Laura Albornos‐Muñoz Instituto de Salud Carlos III, SPAIN Telephone: 34 918222517 Email: lalbornos@isiii.es
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