Table 2.

Pearson’s correlations of Cystatin-C/total cholesterol ratio at wave 6 with the development of low HGS in waves 7, 8, and 9 in the study population (n = 17,698). (HGS; handgrip strength, BMI; body mass index)

Characteristic	Level	Correlation Coefficient	95% CI		P Value
			Lower	Upper
Gender	Male	0.169	0.148	0.191	< 0.001
	Female	0.143	0.124	0.162	< 0.001
Age	50–60	-0.016	-0.047	0.015	0.000
	60–69	0.081	0.057	0.104	< 0.001
	70–79	0.092	0.064	0.120	< 0.001
	80–89	0.048	-0.003	0.098	0.000
	90+	0.125	-0.097	0.336	0.000
BMI	Underweight	0.232	0.038	0.409	0.000
	Normal	0.182	0.158	0.206	< 0.001
	Overweight	0.147	0.125	0.170	< 0.001
	Obese	0.118	0.087	0.149	< 0.001
	Missing	0.129	0.004	0.250	0.000
Quality of life	Low	0.158	0.046	0.266	0.000
	Medium	0.130	0.103	0.156	< 0.001
	High	0.147	0.130	0.165	< 0.001
	Missing	0.222	0.120	0.320	< 0.001
Euro depression scale	No depression	0.143	0.112	0.173	< 0.001
	Low	0.148	0.128	0.167	< 0.001
	Medium	0.162	0.129	0.195	< 0.001
	High	0.114	0.040	0.187	< 0.001
	Missing	0.404	0.220	0.560	< 0.001
Diff. with climbing several flights of stairs	No	0.127	0.111	0.143	< 0.001
	Yes	0.132	0.100	0.164	< 0.001
Difficulty getting up from chair	No	0.141	0.125	0.157	< 0.001
	Yes	0.165	0.130	0.200	< 0.001
Difficulty getting dressed	No	0.146	0.132	0.161	< 0.001
	Yes	0.170	0.107	0.231	< 0.001
Bothered by frailty, falling down	No	0.153	0.138	0.168	< 0.001
	Yes	0.112	0.048	0.176	< 0.001
High blood pressure	No	0.162	0.143	0.181	< 0.001
	Yes	0.119	0.096	0.142	< 0.001
Diabetes or high blood sugar	No	0.152	0.137	0.167	< 0.001
	Yes	0.109	0.068	0.150	< 0.001
Cancer	No	0.155	0.140	0.170	< 0.001
	Yes	0.124	0.047	0.200	0.000
Alzheimer’s disease	No	0.157	0.142	0.171	< 0.001
	Yes	-0.191	-0.367	-0.002	0.000
Stroke	No	0.157	0.142	0.171	< 0.001
	Yes	0.029	-0.063	0.120	0.000
Osteoarthritis	No	0.152	0.136	0.168	< 0.001
	Yes	0.157	0.124	0.190	< 0.001