Mortality rate, under-5 (per 1,000 live births)

Under-five mortality rate is the probability per 1,000 that a newborn baby will die before reaching age five, if subject to age-specific mortality rates of the specified year.五岁以下儿童死亡率（Under-five mortality rate）指在遵循特定年份分年龄死亡率的前提下，每1000名活产新生儿中于年满5岁前死亡的概率。