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Objective To investigate the serum 25⁃hydroxyvitamin D levels and influencing factors in infants and young children aged 0⁃3 years in Yuncheng city. Methods A total of 1 803 infants and young children who underwent physical examinations at Yuncheng Maternal and Child Health Hospital from June 2019 to June 2023 were selected as the research subjects.Venous blood was collected and serum 25⁃hydroxyvitamin D levels were detected by using an AB company high⁃performance liquid chromatography tandem mass spectrometer(AB4500).Univariate analysis was used to investigate the influencing factors of serum 25⁃hydroxyvitamin D levels. Results The serum 25⁃hydroxyvitamin D level of 1 803 infants and young children was(35.256±9.090) ng/mL.Univariate analysis results showed that maternal education level,feeding method,outdoor activity duration,age,and daily 25 hydroxyvitamin D supplementation dose had an impact on the serum 25 hydroxyvitamin D levels of infants and young children(P<0.05). Conclusions Serum 25 hydroxyvitamin D levels in infants and young children aged 0⁃3 years in Yuncheng city are low⁃normal.The higher the mother's education level,the more reasonable outdoor activities,timely addition of complementary foods,and reasonable supplementation of 25 hydroxyvitamin D are beneficial for the healthy growth of infants and young children.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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