Predictive value of a simple model based on nutritional status indicators for cognitive impairment in elderly people undergoing physical examination in Beijing area
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摘要:
目的 营养状况与认知功能的关系是研究热点,本研究建立基于营养状况指标的简易模型并分析对北京地区老年体检人群认知功能损害(CI)的预测价值。 方法 选取2022年2月—2023年4月首都医科大学附属北京康复医院劳模健康管理中心的670名老年体检者,采用蒙特利尔认知评估量表(MoCA)分为认知障碍组(MoCA<26分,CI组)和无认知障碍组(n-CI组),比较2组一般资料、微型营养评估量表(MNA)和血清白蛋白(ALB)指标,分析营养状况指标与受检者CI发生的关系。 结果 670名受检者CI发生率为9.10%(61/670),MoCA评分为(22.78±3.15)分。CI组受教育程度、MNA评分[(18.47±3.57) 分vs. (23.92±3.95) 分]、血清ALB[(30.25±3.86) g/L vs. (38.70±4.26) g/L]均低于n-CI组(P<0.05)。随着MNA评分、血清ALB水平逐渐下降,CI发生率明显升高(P<0.05)。MoCA评分与MNA评分、血清ALB均呈正相关关系(P<0.05)。较低的MNA评分、血清ALB均为老年体检人群CI发生的独立危险因素(P<0.05)。基于MNA评分、血清ALB构建简易模型筛查CI发生的AUC为0.891,均高于单独预测(P<0.05)。 结论 营养状况与老年CI密切相关,基于MNA评分、血清ALB构建简易模型对北京地区老年体检人群CI发生的筛查预测价值显著。 Abstract:Objective The relationship between nutritional status and cognitive function is a research focus. This study established a simple model based on nutritional status indicators and analyzed the predictive value of cognitive function impairment in elderly people in Beijing. Methods From February 2022 to April 2023, 670 elderly physical examination subjects in the Health Management Center of Model Workers, Beijing Rehabilitation Hospital Affiliated to Capital Medical University were selected and divided into cognitive impairment (CI) group (MoCA < 26) and no cognitive impairment (n-CI) group by using the Montreal cognitive assessment (MoCA). The two groups were compared with the general data, the miniature nutrition assessment scale (MNA) and serum albumin (ALB) indexes, and the relationship between the nutritional status indexes and CI occurrence was analyzed. Results The incidence of CI in 670 subjects was 9.10% (61/670) and MoCA score was (22.78±3.15) points. Education level, MNA score [(18.47±3.57) points vs. (23.92±3.95) points] and serum ALB [(30.25±3.86) g/L vs. (38.70±4.26) g/L] in CI group were lower than those in n-CI group (P < 0.05). With the decrease of MNA score and serum ALB level, the incidence of CI was significantly increased (P < 0.05). MoCA score was significantly positively correlated with MNA score and serum ALB (P < 0.05). Lower MNA score and serum ALB were independent risk factors for CI in the elderly population (P < 0.05). The AUC of the simple model based on MNA score and serum ALB was 0.891, which was higher than that predicted by alone (P < 0.05). Conclusion Nutritional status is closely related to CI in the elderly. The simple model built based on MNA score and serum ALB has significant value in predicting CI occurrence in the elderly population in Beijing area. -
Key words:
- Physical examination /
- Old age /
- Cognitive function /
- Nutritional status /
- Simple prediction model
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表 1 CI组与n-CI组老年体检人群相关资料比较
Table 1. Data comparison between CI group and n-CI group
组别 例数 男性/女性(例) 年龄(x±s,岁) 城市/农村(例) 吸烟史[例(%)] 饮酒史[例(%)] 在婚/其他[例(%)] ≥2种/≤1种基础疾病(例) 小学及以下/初中/高中及以上(例) MNA量表评分(x±s,分) 血清ALB(x±s, g/L) CI组 61 39/22 68.12±6.17 29/32 20(32.79) 24(39.34) 40(65.57) 15/46 12/22/27 18.47±3.57 30.25±3.86 n-CI组 609 370/239 66.93±6.03 360/249 159(26.11) 190(31.20) 435(71.43) 99/510 87/210/312 23.92±3.95 38.70±4.26 统计量 0.236a 1.466b 2.249a 1.263a 1.692a 0.921a 2.727a 6.838a 10.359b 14.618b P值 0.627 0.143 0.134 0.261 0.193 0.337 0.099 0.033 <0.001 <0.001 注:a为χ2值,b为t值。 表 2 不同营养状况体检人群的CI发生率
Table 2. Comparison of CI incidence among people with different nutritional status
MNA评分(分) 例数 CI[例(%)] 血清ALB(g/L) 例数 CI[例(%)] ≥24 387 36(9.30) ≥35 400 41(10.25) 17~23 159 30(18.87) 28-34 162 37(22.84) <17 124 61(49.19) ≤27 108 56(51.85) 合计 670 127(18.96) 合计 670 134(20.00) 表 3 老年体检人群MoCA评分与MNA评分、血清ALB的相关性
Table 3. Correlation between MoCA score, MNA score and serum ALB in elderly people undergoing physical examination
组别 例数 MNA评分 血清ALB r值 P值 r值 P值 CI组 61 0.742 <0.001 0.754 <0.001 n-CI组 609 0.713 <0.001 0.708 <0.001 总受检者 670 0.726 <0.001 0.720 <0.001 表 4 北京地区670例老年体检人群CI发生的多因素logistic分析
Table 4. Multivariate logistic analysis of CI occurrence in 670 elderly people in Beijing
变量 B SE Waldχ2 P值 OR值 95% CI 受教育程度 -0.337 0.150 5.048 <0.001 0.714 0.483~0.936 MNA评分 0.608 0.238 6.526 <0.001 1.837 1.257~3.771 血清ALB 0.704 0.271 6.748 <0.001 2.021 1.383~5.027 表 5 营养状况指标筛查北京地区老年体检人群CI发生的ROC曲线分析
Table 5. ROC curve analysis of CI occurrence in the elderly population screened by nutritional status indicators in Beijing area
变量 截断值 AUC(95% CI) SE P值 MNA评分 19.35分 0.812(0.714~0.910) 0.054 <0.001 血清ALB 33.01 g/L 0.770(0.650~0.888) 0.060 <0.001 简易模型 0.891(0.806~0.977) 0.044 <0.001 -
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