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Table 2 Multivariate linear regression analysis for handgrip strength according to tertiles of serum uric acid levels (N = 4230)

From: High serum uric acid level is associated with greater handgrip strength in the aged population

 

Age 20–39 (N = 1497)

Age 40–59 (N = 1747)

Age ≥ 60 (N = 986)

T1*

T2*

T3*

P

T1*

T2*

T3*

P

T1*

T2*

T3*

P

Beta coefficients (95% CI)

Beta coefficients (95% CI)

Beta coefficients (95% CI)

Model 1

Ref

0.413 (− 0.342, 1.167)

0.994 (0.243, 1.749)

0.010

Ref

0.046 (− 0.574. 0.666)

0.188 (− 0.438, 0.814)

0.555

Ref

0.620 (− 0.197, 1.437)

1.238 (0.378, 2.098)

0.005

Model 2

Ref

0.249 (− 0.481, 0.990)

0.386 (− 0.364, 1.136)

0.312

Ref

− 0.033 (− 0.644, 0.578)

− 0.037 (− 0.661, 0.586)

0.906

Ref

0.463 (− 0.343, 1.269)

0.939 (0.084, 1.793)

0.031

Model 3

Ref

0.146 (− 0.641, 0.934)

0.093 (− 0.706, 0.892)

0.820

Ref

− 0.136 (− 0.790, 0.518)

− 0.128 (− 0.804, 0.547)

0.547

Ref

0.387 (− 0.458, 1.232)

1.017 (0.115, 1.920)

0.027

  1. *T1: first tertile (≤ 5.2 mg/dL men; ≤ 3.9 mg/dL women); *T2: second tertile (5.3–6.2 mg/dL men; 4.0–4.6 mg/dL women); *T3: third tertile (≥ 6.3 mg/dL men; ≥ 4.7 mg/dL women)
  2. Multivariate linear regression analysis was used
  3. Model 1: adjusted for sex and age (per year)
  4. Model 2: Model 1 + adjusted for income (quartile) and body mass index (< 18, 18–25, ≥ 25)
  5. Model 3: Model 2 + adjusted for smoking, alcohol drinking, physical activity (MET-h/week), total protein intake (g/day), hypertension, diabetes, cardiovascular disease, and resistance exercise (days for 1 week)