Logistic regression analyses for low grip strength
| OR | 95% CI | P values | |
| (A) Bivariate analyses | |||
| Age | 1.14 | 1.091 to 1.221 | <0.001 |
| Height | 0.80 | 0.752 to 0.872 | <0.001 |
| Weight | 0.80 | 0.835 to 0.927 | <0.001 |
| Fat mass | 0.93 | 0.859 to 0.970 | <0.001 |
| Skeletal muscle mass | 0.61 | 0.528 to 0.779 | <0.001 |
| Log TNF-α | 4.81 | 1.187 to 19.413 | 0.028 |
| Hemoglobin | 0.62 | 0.485 to 0.878 | 0.005 |
| Albumin | 0.08 | 0.018 to 0.263 | <0.001 |
| TTR | 0.85 | 0.827 to 0.948 | <0.001 |
| Zinc | 0.99 | 0.931 to 0.988 | 0.007 |
| Hyperadiponectinemia | 2.92 | 1.373 to 6.437 | 0.006 |
| (B) Multivariate analyses | |||
| Age | 1.03 | 1.021 to 1.171 | 0.011 |
| Height | 0.88 | 0.779 to 0.923 | <0.001 |
| Skeletal muscle mass | 0.72 | 0.594 to 0.951 | 0.018 |
| TTR | 0.92 | 0.829 to 0.982 | 0.017 |
| (C) Multivariate analyses | |||
| Age | 1.16 | 1.034 to 1.183 | 0.003 |
| Height | 0.81 | 0.783 to 0.926 | <0.001 |
| Skeletal muscle mass | 0.70 | 0.621 to 0.979 | 0.032 |
Both A and B included all variables that showed significant differences between women with and without low grip strength in table 1; age, body weight, height, fat and skeletal muscle mass, TNF-α, hemoglobin, albumin, TTR, zinc and hyperadiponectinemia. In C, TTR was removed from B.
BMI, body mass index; CKD, chronic kidney disease; FMI, fat mass index; HDL, high-density lipoprotein; PAI-1, plasminogen activator-inhibitor-1; PB, post-breakfast; RBC, red blood cells.; SMI, skeletal muscle mass index; TNF-α, tumor necrosis factor-alpha; TTR, transthyretin; eGFR, estimated glomerular filtration rate; hsCRP, high-sensitivity C-reactive protein.