A field survey using actual indoor temperature measurements and questionnaires was conducted in Yusuhara, Kochi Prefecture, in November 2019. Based on the field survey, ordinal logistic regression analysis was conducted to identify common characteristics of residents living in a cold environment at waking and before bedtime. Low insulation performance, the type of heating equipment used such as electric heater and air conditioners, and personal attributes such as age, number of people in the household and length of time at home were significant risk factors for living in cold houses.
