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["Supplementary table 1. Baseline information of participants"]
["Variables","Overall","Frailty Staging",null,null,"Z/H","P"]
[null,"(n=1042)","Non-frailty (n=444)","Pre-frailty (n=524)","Frailty (n=74)"]
["Age (Median, [Q1, Q3])","60.00 [54.00-67.00]","58.50 [53.00-66.00]","61.00 [54.00-68.00]","63.00 [56.00-68.25]","17.544 a","﹤0.001"]
["BMI (Median, [Q1, Q3])","24.60 [22.60-26.60]","24.70 [22.9-26.36]","24.50 [22.4-26.68]","25.20 [23.05-27.30]","2.860 a",0.239]
["SB time (Median, [Q1, Q3])","3.00 [2.00-5.00]","3.00 [2.00-5.00]","3.00 [2.00-5.00]","3.00 [2.00-5.00]","2.662 a",0.264]
["Sleep Quality (Median, [Q1, Q3])","6.00 [4.00-9.00]","5.00 [3.00-7.75]","7.00 [4.00-10.00]","7.00 [4.00-10.00]","51.369 a","﹤0.001"]
["Age groups n (%)",{"$nulls":4},"-4.257 a","﹤0.001"]
["45-59","491(47.1)","243(54.7)","220(42.0)","28(37.8)"]
["≥60","551(52.9)","201(45.3)","304(58.0)","46(62.2)"]
["Gender n (%)",{"$nulls":4},"-3.423 a","﹤0.001"]
["Males","351(33.7)","173(39.0)","162(30.9)","16(21.6)"]
["Females","691(66.3)","271(61.0)","362(69.1)","58(78.4)"]
["Ethnic group n (%)",{"$nulls":4},"-1.840 a",0.066]
["Han","1039(99.7)","444(100.0)","522(99.6)","73(98.6)"]
["National Minority","3(0.3)","0(0.0)","2(0.4)","1(1.4)"]
["Education level n (%)",{"$nulls":4},29.833,"﹤0.001"]
["Primary school and below","682(65.5)","250(56.3)","375(71.6)","57(77.0)"]
["Middle school","221(21.2)","115(25.9)","95(18.1)","11(14.9)"]
["High school and above","139(13.3)","79(17.8)","54(10.3)","6(8.1)"]
["Occupations n (%)",{"$nulls":4},37.064,"﹤0.001"]
["Farming","590(56.6)","209(47.1)","334(63.7)","47(63.5)"]
["Workers","85(8.2)","37(8.3)","41(7.8)","7(9.5)"]
["Service worker","51(4.9)","27(6.1)","21(4.0)","3(4.1)"]
["Employee or professional in an organization","66(6.3)","45(10.1)","20(3.8)","1(1.4)"]
["Others","250(24.0)","126(28.4)","108(20.6)","16(21.6)"]
["Marital status n (%)",{"$nulls":4},"-1.391 a",0.164]
["Married","900(86.4)","389(87.6)","452(86.3)","59(79.7)"]
["Divorced or other","142(13.6)","55(12.4)","72(13.7)","15(20.3)"]
["Living status n (%)",{"$nulls":4},"-0.712 a",0.476]
["Living alone","82(7.9)","31(7.0)","46(8.8)","5(6.8)"]
["non-living alone","960(92.1)","413(93.0)","478(91.2)","69(93.2)"]
["Family Disaster n (%)",{"$nulls":4},"-0.781 a",0.435]
["No","915(87.8)","392(88.3)","462(88.2)","61(62.4)"]
["Yes","127(12.2)","52(11.7)","62(11.8)","13(17.6)"]
["Hospitalization Experience n (%)",{"$nulls":4},"-3.738 a","﹤0.001"]
["No","822(78.9)","373(84.0)","398(76.0)","51(68.9)"]
["Yes","220(21.1)","71(16.0)","126(24.0)","23(31.1)"]
["Average monthly family income n (%)",{"$nulls":4},18.2,"﹤0.001"]
["＜2500RMB","700(67.2)","270(60.8)","369(70.4)","61(82.4)"]
["2500-5000RMB","205(19.7)","106(23.9)","91(17.4)","8(10.8)"]
["5000-10000RMB","98(9.4)","51(11.5)","43(8.2)","4(5.4)"]
["＞10000RMB","39(3.7)","17(3.8)","21(4.0)","1(1.4)"]
["Smoking history n (%)",{"$nulls":4},2.324,0.313]
["Current","158(15.2)","73(16.4)","80(15.3)","5(6.8)"]
["Never","799(76.7)","334(75.2)","402(76.7)","63(85.1)"]
["Quit smoking","85(8.2)","37(8.3)","42(8.0)","6(8.1)"]
["Drinking History n (%)",{"$nulls":4},6.17,0.104]
["Regular","96(9.2)","48(10.8)","45(8.6)","3(4.1)"]
["Rarely","298(28.6)","136(30.6)","143(27.3)","19(25.7)"]
["Never","587(56.3)","235(52.9)","306(58.4)","46(62.2)"]
["Quit drinking","61(5.9)","25(5.6)","30(5.7)","6(8.1)"]
["Sleep disorder n (%)",{"$nulls":4},"-5.625 a","﹤0.001"]
["No","683(65.5)","333(75.0)","311(59.4)","39(52.7)"]
["Yes","359(34.5)","111(25.0)","213(40.6)","35(47.3)"]
["SB time n (%)",{"$nulls":4},10.764,0.013]
["＜4h/d","583(56.0)","245(55.2)","291(55.5)","47(63.5)"]
["4-6h/d","273(26.2)","133(30.0)","130(24.8)","10(13.5)"]
["6-8 h/d","121(11.6)","44(9.9)","67(12.8)","10(13.5)"]
["≥8 h/d","65(6.2)","22(5.0)","36(6.9)","7(9.5)"]
["BMI n (%)",{"$nulls":4},9.514,0.009]
["Thin and normal","409(39.3)","164(36.9)","218(41.6)","27(36.5)"]
["overweight","476(45.7)","226(50.9)","218(41.6)","32(43.2)"]
["obese","157(15.1)","54(12.2)","88(16.8)","15(20.3)"]
["PAL n (%)",{"$nulls":4},20.435,"﹤0.001"]
["Light","291(27.9)","115(25.9)","137(26.1)","39(52.7)"]
["Moderate","480(46.1)","238(53.6)","219(41.8)","23(31.1)"]
["Vigorous","271(26.0)","91(20.5)","168(32.1)","12(16.2)"]
["Notes: a Represents Z values, others represent H values.\nZ-values represent comparisons of two non-normally distributed samples using the Mann-Whitney U test, and H-values represent comparisons of multiple non-normally distributed samples using the Kruskal-Wallis test.\n[Q1, Q3] indicates [First Quartile, Third Quartile]. BMI, Body Mass Index. SB, sedentary behavior. PAL, physical activity level."]

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