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Table 1 Baseline characteristics of studied participants

From: Better muscle strength can decrease the risk of arthralgia and back &joint stiffness in Kurdish men; a cross-sectional study using data from RaNCD cohort study

Variables Total
(n = 2164)
Without low back pain
(n = 1701)
With low back pain
(n = 463)
P** Without arthralgia
(n = 1632)
With arthralgia
(n = 532)
P**
Age (year) 46.77 ± 7.89a 46.53 ± 7.86 47.63 ± 7.91 0.006 46.21 ± 7.71 48.48 ± 8.17 < 0.001
Weight (kg) 75.44 ± 13.31 75.31 ± 13.23 75.92 ± 13.61 0.326 75.38 ± 13.10 75.63 ± 13.95 0.87
BMI (kg/m2) 25.94 ± 4.07 25.96 ± 4.02 25.91 ± 4.25 0.05 25.87 ± 4.04 26.15 ± 4.16 0.432
WC (cm) 96.32 ± 9.73 96.35 ± 9.2 96.22 ± 11.46 0.505 96.06 ± 9.81 97.12 ± 9.43 0.03
Muscle strength (kg) 41.15 ± 9.27 41.23 ± 9.24 40.83 ± 9.42 0.326 41.69 ± 9.17 39.47 ± 9.4 < 0.001
PA (MET hour/day) 43.21 ± 9.65 43.27 ± 9.77 43.01 ± 9.18 0.893 43.17 ± 9.63 43.34 ± 9.71 0.472
Drinking, % 13.7 13.6 14 0.436 13 16 0.05
Diabetes, % 6.3 6.6 5.4 0.218 5.8 7.9 0.05
Back stiffness, % 5.1 2.5 14.5 < 0.001 2.6 12.8 < 0.001
Joint stiffness, % 3 2.1 6 < 0.001 0.4 10.9 < 0.001
  1. BMI Body mass index, WC Waist circumference, PA Physical activity
  2. **P-values were obtained independent samples T test and Chi square
  3. aMean ± SD