Protecting the elderly from heat and cold stress In Hong Kong: Using climate information and client-friendly communication technology

The climate data of Hong Kong Observatory (HKO) was used to study the effect of weather on the health of elderly people and their help-seeking behavior. The number of users activating SCHSA’s personal emergency and caring service requiring hospitalization was analysed. The results showed that the number of hospitalized users increased when the minimum temperature dropped below 22°C and when the maximum temperature was higher than 30°C. Dry weather (relative humidity at 70% or below) had a greater impact on the elderly in the cool season. Furthermore, elderly women, older elderly and users who do not live alone were more sensitive to extremely hot and cold weather conditions.

These findings helped SCHSA to formulate appropriate response actions under cold and hot weather conditions based on the 9-day weather forecast and the experimental monthly climate forecast provided by HKO. For example, SCHSA would remind the elderly to prepare for impending wintry weather through its Call and Care Centre, so as to minimize the health impact of weather changes on them. SCHSA also worked with the media to remind the public to take the initiative of providing care and assistance to elderly people living alone or in need. Strengthening of the manpower of the Call and Care Centre was also planned in anticipation of such weather conditions.