3.
不同维生素A水平者血清铁蛋白浓度比较
| (x±s, ng/L) | ||
| 组别 | 例数 | 血清铁蛋白 |
| 注:a示与亚临床缺乏组和正常组相比, P < 0.05。 | ||
| 正常组 | 1 407 | 64±30 |
| 亚临床缺乏组 | 647 | 69±33 |
| 临床缺乏组 | 31 | 83±10a |
| F值 | 5.639 | |
| P值 | 0.004 | |
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