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To understand the changes of stunting among primary and secondary school students in the areas of Nutrition Improvement Programme for rural Compulsory Education Students in Henan Province from 2012 to 2021, so as to provide a basis for improving malnutrition and promoting healthy growth of students.
A stratified random cluster sampling method was used to select 10% of primary and junior high schools from 28 monitoring counties in Henan Province, with no less than 40 students in each grade, a total of 1 198 228 students were sampled in 8 years, and their heights were measured to analyse the stunting situation.
The rates of stunting among students in the monitoring areas of Henan Province were 1.33%, 1.23%, 1.08%, 0.74%, 0.87%, 0.71%, 0.80% and 0.43% from 2012 to 2021, showing a fluctuating downward trend. The overall rate was higher for girls (1.09%) than for boys (0.85%) (χ2=189.596, P<0.05), and for primary schools (0.99%) than for lower secondary schools (0.79%) (χ2=61.862, P<0.05). The rates of stunting in both boys and girls, in primary and junior high school, and in all age groups basically showed a fluctuating downward trend among different years (P<0.05). The rate of stunting in all years showed a decreasing and then increasing trend in the age group of 6～12 years old, then an increasing trend after a decrease in the age group of 13 years old, and then a maximum in the age group of 16 years old.
The rate of stunting among students in the Nutrition Improvement Programme for Rural Compulsory Education Students in Henan Province from 2012 to 2021 shows a fluctuating downward trend, but there is still a certain percentage, which requires targeted intervention policies.
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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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