This study estimates the prevalence of multimorbidity in family practice patients in the Saguenay region of Quebec, Canada, using the Cumulative Illness Rating Scale (CIRS). The study involved 21 family physicians and 980 patients, with 320 men and 660 women. Overall, 9 out of 10 patients had more than one chronic condition. The prevalence of having two or more chronic conditions was 68% in the 18-44 age group, 95% in the 45-64 age group, and 99% in those 65 and older among women, and 72%, 89%, and 97% among men. The mean number of conditions and CIRS scores increased significantly with age. The study found that multimorbidity is common and increases with age in both men and women. Patients with multimorbidity seen in family practice represent the rule rather than the exception. The study highlights the need for improved primary care models to address the high prevalence of multimorbidity. The results suggest that the prevalence of multimorbidity is higher than previously reported in other studies. The study used a comprehensive approach to assess multimorbidity, including a review of medical records and the CIRS. The findings emphasize the importance of addressing multimorbidity in primary care settings. The study also notes that the prevalence of multimorbidity may be influenced by factors such as the availability of medical specialists and the socioeconomic status of the population. The study concludes that the high prevalence of multimorbidity in family practice patients calls for a reevaluation of health care models and priorities to better meet the needs of these patients.This study estimates the prevalence of multimorbidity in family practice patients in the Saguenay region of Quebec, Canada, using the Cumulative Illness Rating Scale (CIRS). The study involved 21 family physicians and 980 patients, with 320 men and 660 women. Overall, 9 out of 10 patients had more than one chronic condition. The prevalence of having two or more chronic conditions was 68% in the 18-44 age group, 95% in the 45-64 age group, and 99% in those 65 and older among women, and 72%, 89%, and 97% among men. The mean number of conditions and CIRS scores increased significantly with age. The study found that multimorbidity is common and increases with age in both men and women. Patients with multimorbidity seen in family practice represent the rule rather than the exception. The study highlights the need for improved primary care models to address the high prevalence of multimorbidity. The results suggest that the prevalence of multimorbidity is higher than previously reported in other studies. The study used a comprehensive approach to assess multimorbidity, including a review of medical records and the CIRS. The findings emphasize the importance of addressing multimorbidity in primary care settings. The study also notes that the prevalence of multimorbidity may be influenced by factors such as the availability of medical specialists and the socioeconomic status of the population. The study concludes that the high prevalence of multimorbidity in family practice patients calls for a reevaluation of health care models and priorities to better meet the needs of these patients.