图1. 不同胎龄组早产儿校正24月龄内的身长、体重和头围曲线 各胎龄组早产儿的体格生长（身长、体重和头围）曲线均在实际8月龄、校正6月龄内增长速度较快，此后增长速度减缓。校正月龄后，各胎龄组早产儿的体格生长曲线基本重合；超早产儿的头围曲线稍落后于INTERGROWTH-21st标准和WHO标准。.
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