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This study aimed to investigate the trend of abdominal obesity in Guangzhou from 2008 to 2018 and assess the impact of age, period, and cohort effects on its prevalence during this period.
Based on data from the Guangzhou Community Health Survey conducted every five years, residents were classified into abdominal obesity and normal body type groups according to their waist-to-hip ratio. Time trend analysis and age-period-cohort (APC) models were applied to investigate changes in abdominal obesity and its influencing factors among residents aged 15 to 79 years in Guangzhou.
The annual change rate of central obesity from 2008 to 2013 was 2.41% (1.86%-2.95%), whereas from 2013 to 2018, it decreased to -0.67% (-1.21%~-0.12%), indicating an initial increase followed by a subsequent decline. However, no significant decreasing trend was observed among the elderly population. The APC model identified advanced age as a significant factor for abdominal obesity in both men and women. Between 2008 and 2013, the prevalence of abdominal obesity increased by 15%, with women experiencing a greater rise than men, before declining to slightly below the 2008 level by 2018.Cohort effects revealed that individuals born around the time of China's economic reform had a higher risk of abdominal obesity.
Although the prevalence of abdominal obesity in Guangzhou shows a declining trend, it remains at a high level. There is a need for targeted interventions focusing on the elderly and individuals born around the 1970s, who underwent rapid nutritional transitions during that period.
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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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