Person-centred approaches in long-term care focus on providing holistic care to residents in order to improve quality of life, enhance resident wellbeing and autonomy, and mitigate behavioural and/or other symptoms. The results of research on person-centred approaches to care are mixed, with very few high-quality empirical studies examining resident outcomes specifically. The purpose of this investigation was to examine a person-centred care programme implemented in three Canadian long-term care facilities to determine its effect on resident outcomes, approach to care and maintenance of the programme three years after implementation. Using the Resident Assessment Instrument Minimum Data Set (RAI-MDS) scale scores and quality indicators, we retrospectively examined resident outcomes before, after and six months following the initiation of the programme using three additional facilities as control. We did not find any effects on resident outcomes. Focus group interviews with facility staff revealed no systematic differences between the programme and control facilities in their approach to care. All facilities supported aspects of a person-centred philosophy. Focus group interview data from the programme facilities indicated partial maintenance in two facilities and more complete maintenance in one facility. Although staff members supported the programme, implementation and maintenance proved difficult and effectiveness on resident outcomes was not indicated in this research. Additional controlled studies are needed.