Full
Outline
To identify the long-term trajectories of body mass index (BMI) among Chinese adults and analyze their influencing factors, providing a scientific basis for developing precision weight management strategies.
Using longitudinal data from seven waves (2010—2022) of the China Family Panel Studies (CFPS), we included 6 134 adults aged ≥18 years. We used the group-based trajectory model (GBTM) to fit BMI change trajectories and multinomial logistic regression to analyze the influencing factors of each trajectory group.
The GBTM identified four distinct BMI trajectories: stable normal weight (25.29%), progressive overweight (39.73%), persistent overweight (27.47%), and fluctuating obesity (7.52%).Multinomial logistic regression analysis revealed that age 30-44 (RRR=1.476, 95% CI: 1.205-1.807) and 45-59 (RRR=1.478,95% CI: 1.199-1.822), urban residence (RRR=1.252, 95% CI: 1.086-1.443), and physical exercise (RRR=1.292, 95% CI:1.101-1.517) were risk factors for the progressive overweight group, while self-rated unhealthy (RRR=0.593, 95% CI: 0.480-0.733) was a protective factor for this group. For the persistent overweight group, male (RRR=1.202, 95% CI: 1.032-1.401), age 30-44 (RRR=1.649, 95% CI: 1.315-2.067) and 45-59 (RRR=1.527, 95% CI: 1.209-1.929), urban residence (RRR=1.361,95% CI: 1.167-1.587), being married (RRR=1.634, 95% CI: 1.273-2.098), high household income per capita (RRR=1.346,95% CI: 1.113-1.628), physical exercise (RRR=1.359, 95% CI: 1.144-1.614), and having chronic disease(s) (RRR=1.317, 95% CI: 1.059-1.638) were risk factors, whereas self-rated unhealthy (RRR=0.670, 95% CI: 0.532-0.843) was a protective factor.Risk factors for the fluctuating obesity group included urban residence (RRR=1.861, 95% CI: 1.481-2.339), being married(RRR=1.671, 95% CI: 1.136-2.458), alcohol consumption (RRR=1.467, 95% CI: 1.095-1.966), physical exercise (RRR=1.316, 95% CI: 1.024-1.691), and having chronic disease(s) (RRR=1.837, 95% CI: 1.359-2.483).
Chinese adults exhibit significant heterogeneity in BMI trajectories, necessitating focused interventions for the progressive overweight and persistent overweight groups, with targeted strategies for high-risk populations including urban residents, married individuals, physically active adults, middle-aged groups, and chronic disease patients.
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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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