Objective Studies on advance care planning in nursing homes are rare, and despite their demonstrated favourable effects on end-of-life care, advance care plans are often lacking. Therefore, we wished to explore: (i) the prevalence of advance care plans in a Swedish nursing home setting using two different definitions, (ii) the content of advance care plans, (iii) adherence to the content of care plans and (iv) possible associations between the presence of advance care planning and background characteristics, physician attendance and end-of-life care. Design Retrospective chart review. Setting Twenty-two nursing homes in Sweden. Subjects A total of 367 deceased patients (included between 1 June 2018 and 23 May 2020) who had lived in nursing homes. Main outcome measures Electronic health record data on the prevalence of advance care plans with two different definitions and variables regarding background characteristics, physician attendance and end-of-life care, were collected. Results Of the study population, 97% had a limited care plan (ACP I) documented. When using the comprehensive definition (ACP II), also including patients preferences and involvement of family members in advance care planning, the prevalence was 77%. Patients with dementia more often had care plans, and a higher physician attendance was associated with presence of advance care plans. Prescription of palliative drugs and information to family members of the patients deterioration and impending death were more common in patients with care plans compared to those where such plans were missing. There was adherence to the care plan content. Conclusion In contrast to previous research, this study showed a high prevalence of advance care plans in nursing home patients. Patients with care plans more frequently received prescriptions of palliative drugs and their family members were informed to a greater extent about the patients deterioration and impending death compared to those without care plans. These aspects are often seen as vital components of good palliative care.