The relationship between the activities of daily living and death in the elderly aged 65 and over in China
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摘要:
目的 探讨老年人日常生活活动能力(activities of daily living, ADL)与中短期死亡之间的关系。 方法 本研究使用了来自中国老年健康影响因素跟踪调查(Chinese Longitudinal Healthy Longevity Survey, CLHLS)的数据。分析样本包括37 173名CLHLS项目历次调查中的新人群,生存结局来自研究对象2~4年后首次跟踪随访调查结果。失能情况是通过ADL能力量表进行测量。计算ADL总分并进行分组之后,本研究通过多种统计建模策略,探讨不同失能水平对老年人死亡的影响。 结果 调整人口学、健康行为、膳食摄入特征等混杂因素后,ADL总分人群死亡风险存在着统计学关联(RR=1.09, 95% CI:1.08~1.09, P < 0.001)。以6分组作对照,得分高于6分组的人群发生死亡的风险增加69%(RR=1.69, 95% CI:1.65~1.74, P < 0.001)。以正常组作为对照组,低级失能组和高级失能组的人群发生死亡的风险分别增加52%和92%(RR=1.52, 95% CI:1.47~1.56, P < 0.001; RR=1.92, 95% CI: 1.86~1.97, P < 0.001)。 结论 基于CLHLS样本发现,失能会增加老年人发生死亡的风险,短期随访、低年龄段的失能老年人发生死亡的风险更大。 Abstract:Objective To explore the relationship between disability in activities of daily living and death in the elderly. Methods Data from the Chinese Longitudinal Healthy Longevity Survey (CLHLS), which is a nationally representative study. The analysis included 37 173 subjects, all of whom were new entrants in the year of the interview. The survival outcome was derived from the first follow-up after 2-4 year. And disability was measured using the scale of Activities of Daily Living (ADL). By calculating and grouping the ADL scores, several statistical models were used to analyze the relationship between disability and death in the elderly. Results After adjusted for confounding factors such as demographics, health behaviors, and dietary intake characteristics, a statistical association was observed between ADL total score and the risk of death in the population (RR=1.09, 95% CI: 1.08-1.09, P < 0.001). Compared scored of 6, death for people with scores >6 increased by 69% (RR=1.69, 95% CI: 1.65-1.74, P < 0.001). Compared normal group, the risk of death in the low-grade disability group and the high-grade disability group increase by 52% and 92%, respectively (RR=1.52, 95% CI: 1.47-1.56, P < 0.001; RR=1.92, 95% CI: 1.86-1.97, P < 0.001). Conclusion In the CLHLS sample, disability increases the risk of death in the elderly, and short-term follow-up and low-age disabled elderly are at greater risk of death. -
Key words:
- Activities of daily living /
- The elderly /
- Death
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表 1 不同血压水平人群相关影响因素的无序多分类Logistic回归分析[n (%)]
Table 1. Disordered multiple Logistic regression analysis of related factors in different blood pressure levels [n (%)]
变量 ADL总分[M(P25, P75)](N=37 173人) Z值/H值a P值 ADL正常组(n=26 441人) ADL低失能组(n=6 941人) ADL高失能组(n=3 791人) χ2值 P值 性别 -32.23 < 0.001 1 012.99 < 0.001 男性 6.00(6.00, 6.00) 12 209(46.2) 2 147(30.9) 926(24.4) 女性 6.00(6.00, 6.00) 14 232(53.8) 4 794(69.1) 2 865(75.6) 年龄(岁) -48.78 < 0.001 2 426.39 < 0.001 65~ < 80 6.00(6.00, 6.00) 6 902(26.1) 335(4.8) 69(1.8) ≥80 6.00(6.00, 8.00) 19 539(73.9) 6 606(95.2) 3 722(98.2) 户籍地 -9.40 < 0.001 128.06 < 0.001 农村 6.00(6.00, 7.00) 16 012(60.6) 3 684(53.1) 2 206(58.2) 城镇 6.00(6.00, 7.00) 10 429(39.4) 3 257(46.9) 1 585(41.8) 居住情况 647.45 < 0.001 644.48 < 0.001 和家人 6.00(6.00, 7.00) 21 503(81.3) 6 201(89.3) 3 419(90.2) 独居 6.00(6.00, 6.00) 4 148(15.7) 473(6.8) 189(5.0) 养老院 6.00(6.00, 8.00) 790(3.0) 267(3.8) 183(4.8) 吸烟 694.79 < 0.001 696.37 < 0.001 从不 6.00(6.00, 7.00) 17 301(65.4) 5 029(72.5) 3 011(79.4) 曾经 6.00(6.00, 7.00) 3 513(13.3) 1 060(15.3) 535(14.1) 一直 6.00(6.00, 6.00) 5 627(21.3) 852(12.3) 245(6.5) 饮酒 372.39 < 0.001 374.18 < 0.001 从不 6.00(6.00, 7.00) 17 911(67.7) 4 979(71.7) 2 922(77.1) 曾经 6.00(6.00, 8.00) 2 487(9.4) 791(11.4) 457(12.1) 一直 6.00(6.00, 6.00) 6 043(22.9) 1 171(16.9) 412(10.9) 锻炼 1 932.14 < 0.001 2 052.2 < 0.001 从不 6.00(6.00, 7.00) 17 050(64.5) 4 600(66.3) 3 044(80.3) 曾经 7.00(6.00, 10.00) 1 173(4.4) 860(12.4) 592(15.6) 一直 6.00(6.00, 6.00) 8 218(31.1) 1 481(21.3) 155(4.1) 体力劳动 -14.84 < 0.001 215.98 < 0.001 从不 6.00(6.00, 8.00) 5 031(19.0) 1 754(25.3) 1 017(26.8) 一直 6.00(6.00, 7.00) 21 410(81.0) 5 187(74.7) 2 774(73.2) 教育程度 766.45 < 0.001 766.04 < 0.001 0年 6.00(6.00, 8.00) 16 417(62.1) 5 192(74.8) 3 042(80.2) 1~≤7年 6.00(6.00, 6.00) 7 534(28.5) 1 342(19.3) 568(15.0) >7年 6.00(6.00, 6.00) 2 490(9.4) 407(5.9) 181(4.8) 职业 -1.66 0.098 1.19 0.557 脑力工作 6.00(6.00, 7.00) 8 750(33.1) 2 260(32.6) 1 229(32.4) 体力工作 6.00(6.00, 7.00) 17 691(66.9) 4 681(67.4) 2 562(67.6) 婚姻状况 -41.20 < 0.001 1710.12 < 0.001 有配偶 6.00(6.00, 6.00) 8 344(31.6) 851(12.3) 329(8.7) 无配偶 6.00(6.00, 8.00) 18 097(68.4) 6 090(87.7) 3 462(91.3) 患慢病情况 452.47 < 0.001 446.34 < 0.001 0种 6.00(6.00, 7.00) 15 884(60.1) 3 552(51.2) 1 845(48.7) 1~2种 6.00(6.00, 7.00) 7 381(27.9) 2 090(30.1) 1 164(30.7) >2种 6.00(6.00, 8.00) 3 176(12.0) 1 299(18.7) 782(20.6) 主食种类 -11.00 < 0.001 164.35 < 0.001 精粮 6.00(6.00, 7.00) 23 649(89.4) 5 825(83.9) 3 309(87.3) 杂粮 6.00(6.00, 8.00) 2 791(10.6) 1 116(16.1) 482(12.7) 主食摄入量 -29.00 < 0.001 830.73 < 0.001 300 g/天 6.00(6.00, 8.00) 16 489(62.4) 5 137(74.0) 3 138(82.8) >300 g/天 6.00(6.00, 6.00) 9 951(37.6) 1 804(26.0) 653(17.2) 新鲜水果 134.19 < 0.001 170.97 < 0.001 每天 6.00(6.00, 8.00) 2 950(11.2) 1 117(16.1) 513(13.5) 冬天除外 6.00(6.00, 7.00) 4 662(17.6) 1 054(15.2) 504(13.3) 偶尔 6.00(6.00, 7.00) 18 828(71.2) 4 770(68.7) 2 774(73.2) 新鲜蔬菜 234.67 < 0.001 287.85 < 0.001 每天 6.00(6.00, 7.00) 17 436(65.9) 4 449(64.1) 2 196(57.9) 冬天除外 6.00(6.00, 7.00) 6 008(22.7) 1 460(21.0) 813(21.4) 偶尔 6.00(6.00, 8.00) 2 996(11.3) 1 032(14.9) 782(20.6) 注:a ADL总分呈偏态分布,采用独立样本秩和检验分析,故统计量为Z值/H值。 表 2 不同ADL形式人群发生死亡风险的修正Poisson回归模型[RR (95% CI)]
Table 2. Modified Poisson regression model of the risk of death among people with different forms of ADL [RR (95% CI)]
分组 人数 模型1 a 模型2 b 模型3 c RR(95% CI) P值 RR(95% CI) P值 RR(95% CI) P值 ADL总分 37 173 1.12(1.11~1.12) < 0.001 1.10(1.09~1.10) < 0.001 1.09(1.08~1.09) < 0.001 ADL得分 6分 26 441 1.00 1.00 1.00 >6分 10 732 2.14(2.10~2.19) < 0.001 1.74(1.70~1.79) < 0.001 1.69(1.65~1.74) < 0.001 ADL失能程度 正常 26 441 1.00 1.00 1.00 低失能 6 941 1.90(1.85~1.96) < 0.001 1.56(1.52~1.61) < 0.001 1.52(1.47~1.56) < 0.001 失能 3 791 2.58(2.52~2.65) < 0.001 2.07(2.02~2.13) < 0.001 1.92(1.86~1.97) < 0.001 注:a未纳入混杂因素;b纳入年龄、性别因素;c纳入人口学特征、健康行为特征、膳食摄入特征等因素。 表 3 不同随访时间下人群发生死亡风险的修正Poisson回归模型[RR (95% CI)]
Table 3. Modified Poisson Regression Model for the Risk of Death in the Population at Different Follow-up Time [RR (95% CI)]
分组 人数 2年随访 人数 3~4年随访 模型1 模型2 模型3 模型1 模型2 模型3 ADL总分 14 663 1.12(1.12~1.13) a 1.12(1.11~1.12) a 1.10(1.10~1.11) a 22 510 1.12(1.12~1.13) a 1.08(1.07~1.08) a 1.07(1.06~1.07) a ADL得分 6分 9 593 1.00 1.00 1.00 16 848 1.00 1.00 1.00 >6分 5 070 2.12(2.03~2.21) a 2.02(1.94~2.11) a 1.89(1.81~1.97) a 5 662 2.23(2.117~2.30) a 1.62(1.57~1.66) a 1.54(1.50~1.59) a ADL失能程度 正常 9 593 1.00 1.00 1.00 16 848 1.00 1.00 1.00 低失能 3 220 1.80(1.72~1.89) a 1.73(1.64~1.81) a 1.67(1.58~1.75) a 3 721 2.03(1.97~2.10) a 1.50(1.45~1.55) a 1.45(1.40~1.50) a 高失能 1 850 2.67(2.55~2.79) a 2.54(2.43~2.66) a 2.30(2.19~2.41) a 1 941 2.62(2.54~2.70) a 1.85(1.80~1.91) a 1.72(1.66~1.78) a 注:模型1:未纳入混杂因素;模型2:纳入年龄、性别因素;模型3:纳入人口学特征、健康行为特征、膳食摄入特征等因素; a表示结果具有统计学意义(P < 0.001)。 表 4 不同年龄人群发生死亡风险的修正Poisson回归模型[RR (95% CI)]
Table 4. Modified Poisson Regression Model for the risk of death among people of different ages [RR (95% CI)]
分组 人数 65~<80岁 人数 ≥80岁 模型1 模型2 模型3 模型1 模型2 模型3 ADL总分 7 306 1.24(1.22~1.26) a 1.24(1.22~1.27) a 1.19(1.15~1.22) a 29 867 1.09(1.09~1.09) a 1.09(1.09~1.09) a 1.08(1.08~1.08) a ADL得分 6分 6 902 1.00 1.00 1.00 19 539 1.00 1.00 1.00 >6分 404 2.89(2.51~3.33) a 2.92(2.53~3.36) a 2.38(1.98~2.85) a 10 328 1.71(1.67~1.75) a 1.71(1.67~1.75) a 1.64(1.60~1.68) a ADL失能程度 正常 6 902 1.00 1.00 1.00 19 539 1.00 1.00 1.00 低失能 335 2.24(1.87~2.68) a 2.26(1.89, 2.71) a 2.05(1.66~2.55) a 6 606 1.53(1.49~1.58) a 1.54(1.50~1.58) a 1.50(1.46~1.54) a 高失能 69 5.62(4.73~6.68) a 5.60(4.71, 6.66) a 3.83(2.95~4.97) a 3 722 2.02(1.97~2.08) a 2.02(1.97~2.07) a 1.90(1.85~1.95) a 注:模型1:未纳入混杂因素;模型2:纳入年龄、性别因素;模型3:纳入人口学特征、健康行为特征、膳食摄入特征等因素; a表示结果具有统计学意义(P < 0.001)。 -
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