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To analyze the status and long-term trends in dietary intake and dietary diversity of adults in Guizhou province from 1991 to 2018.
The food intake was worked out by 3 consecutive days of dietary recollection.The χ2 test was used to analyze the dietary intake status of different dietary categories by demographic characteristics in 2018. Cochran-Armitage trend test was used to analyze the trend of the proportion of people at risk. Dietary Diversity Scores (DDS) were conducted based on the intake of 9 food groups, and a general linear model was used to test trends in DDS.
The proportion of insufficient intake of livestock and poultry meat was higher in people aged 60 years or older than in residents aged 18-44 years (χ2=11.931, P<0.001), the differences in the proportions of insufficient/excessive intake of vegetables, fat, oil and salt were statistically significant among ethnic groups (χ2 range: 5.852-12.392,P range: <0.001-0.016), and those with higher education had lower proportions of insufficient intake of fruits and livestock (χ2 range: 10.173-21.870, P range: <0.001-0.001), people in rural areas had higher excessive proportions of intake of oil and salt and higher insufficient proportions of livestock and poultry meat, fruits and aquatic products, but their proportions of insufficient intake of cereals and potatoes and soya nuts were lower (χ2 range: 6.986-39.627, P range: <0.001-0.008) compared with the city and other populations. The proportion of insufficient intake of grains and potatoes, vegetables, soya beans and nuts in the population tended to increase(Zcereal=17.839,Z vegetable=11.579,Zbean&nuts=7.749, P<0.001); the proportion of insufficient intake of fruits, livestock and poultry meat, eggs and dairy products tended to decrease (Z range: -19.991-(-2.764), P range: <0.001-0.006); the proportion of excessive intake of salt and alcohol in the population tended to decrease, while the proportion of excessive intake of sugar tended to increase (Zsalt=-20.899,Zalcohol=-12.460,Zsugar=6.791, P<0.001); except for those with education level of tertiary education and above (β=0.005, P=0.520), the Dietary Diversity Score (DDS) of the rest of the subgroups showed an increasing trend (β range: 0.025-0.058, P<0.001).
The dietary structure of residents aged 18 years and above in Guizhou Province is irrational. Although the DDS score has increased, nutritional health interventions should be carried out for different groups of people to improve their dietary quality.
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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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