Table 3.

Association of Clinical Measures with Frailty Among Adults Aged ≥60 Years From the China Health and Retirement Longitudinal Study, 2011; Weighted Estimates)

	Within each frailty status (%)
	Robust	Prefrail	Frail	p a
	n = 2,332	n = 2,722	n = 347
	Meanb
SBP, mmHg	136.0	136.0	141.2	.018
SBP ≥150 mmHg, %	23.4%	25.5%	34.5%	.035
DBP, mmHg	75.8	75.3	75.6	.405
DBP ≥90 mmHg, %	11.8%	10.5%	12.0%	.666
WBC count, 103/cm	6.2	6.2	6.5	.210
WBC count ≥7.6 × 103/ cm, %	18.8%	18.3%	21.8%	.584
Hematocrit, %	41.2	40.9	40.3	.075
Hematocrit <36.4%, %	19.9%	19.8%	17.5%	.721
Platelets, 103/cm	207.0	205.4	204.9	.803
Platelets ≥262 × 103/ cm, %	18.9%	20.7%	19.2%	.559
Hemoglobin, g/dL	14.3	14.1	14.0	.042
Hemoglobin <12 g/ dL, %	8.8%	12.7%	14.3%	.023
Cystatin C, mg/L	1.1	1.1	1.2	<.001
Cystatin C ≥1.2 mg/L	15.3%	20.4%	28.2%	<.001
CRP, mg/L, median	1.3	1.2	1.7	.027
CRP, mg/L, mean	3.2	3.4	4.7	.074
CRP ≥2.5 mg/L, %	19.7%	18.2%	24.7%	.106
Fasting glucose, mg/dL	112.1	112.4	107.2	.112
Fasting glucose ≥125 mg/dL, %	15.2%	17.6%	12.9%	.167
LDL cholesterol, mg/ dL	118.2	114.9	113.5	.036
LDL cholesterol ≥144 mg/dL, %	21.4%	18.0%	18.6%	.153
HDL cholesterol, mg/ dL	49.9	51.1	51.2	.262
HDL cholesterol <38 mg/dL, %	21.6%	21.9%	25.5%	.553
Total cholesterol, mg/ dL	193.9	192.2	190.6	.410
Total cholesterol ≥225 mg/dL, %	19.9%	19.8%	20.4%	.983
Triglycerides, mg/dL, median	107.1	105.3	114.2	.011
Triglycerides ≥169 mg/ dL, %	21.4%	20.5%	18.9%	.792

Note: CRP = C reactive protein; DBP = diastolic blood pressure; HDL = high-density lipoproteins; LDL = low-density lipoproteins; SBP = systolic blood pressure; SD = standard deviation; WBC = white blood cell.

^a p-values were obtained by analysis of variance or nonparametric equivalent for continuous biomarkers and χ² for dichotomously modeled biomarkers.

^bUnless otherwise stated.