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To analyze the relationship between the proportion of omega-6/omega-3 and mortality in patients with cardiovascular disease (CVD), so as to provide reference for reducing the risk of death in patients with CVD.
The data were collected from the UK perspective cohort (UK Biobank) database. The exposure variable was the proportion of plasma omega6/omega-3, and the outcomes were all- cause deaths, CVD deaths, ischemic heart disease (IHD) deaths, and stroke deaths. Multivariate Cox proportional hazard regression model was used to analyze the relationship between omega-6/omega-3 ratio and death risk of CVD patients. Hazard ratio (HR) and 95% confidence interval (CI) were calculated. Gender, age, and other risk factors were stratified and their interaction with omega-6/omega-3 ratio was analyzed. Restricted cubic spline (RCS) was used to describe the dose-response relationship. Sensitivity analysis was used to test the robustness of the model.
A total of 35 096 participants were enrolled. Multivariate Cox proportional hazard regression model showed that all-cause deaths, CVD deaths, and ischemic heart disease deaths risk increased in CVD patients with the increase of the proportion of omega-6/omega-3. For each unit increase in omega-6/omega-3 ratio, the risk of all-cause, CVD, and IHD deaths increased by 2.1% (HR=1.021, 95%CI: 1.016-0.025), 1.9% (HR=1.019, 95%CI: 1.010-1.028), and 2.3% (HR=1.023, 95%CI:1.013-1.034), respectively. The proportion of omega-6/omega-3 was grouped according to quartile method and included in the model as a classified variable. Compared with Q1, the HR of all-cause, CVD, and IHD deaths of Q4 was 1.394 (95%CI: 1.267-1.534), 1.292 (95%CI: 1.085-1.540), and 1.528 (95%CI: 1.200-1.945), respectively, and no correlation was found between Q4 and stroke death risk (HR=0.987, 95%CI: 0.660-1.477). The results of RCS showed that the proportion of omega-6/omega3 was positively correlated with the risk of death.
The proportion of omega-6/omega-3 is a risk factor for death in patients with CVD.
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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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