standard cross-section
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据经验数据显示,标准的横断面调查统计数据对婴儿以及五岁以下儿童的死亡率分别低估了6.7%和9.8%。
According to the empirical data, standard cross-sectional survey statistics underestimated true infant and under-5 mortality by 6.7% and 9.8%, respectively.
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