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Table 2 Mean SMI and grip strength across 4 waves by age and towns

From: Neighborhood environment and muscle mass and function among rural older adults: a 3-year longitudinal study

   SMI, mean (sd) Grip strength, mean (sd)
2016 2017 2018 2019 2016 2017 2018 2019
Male
Unnan 60–75 7.6 (0.9) 7.7 (0.9) 7.6 (0.8) 7.6 (0.9) 37.2 (5.7) 37.3 (5.8) 37.1 (5.9) 37.1 (5.1)
  76 +  7.4 (0.8) 7.2 (0.7) 7.3 (0.8) 7.2 (0.8) 32.4 (5.8) 32.8 (5.7) 33.5 (4.4) 33.6 (4.8)
Oki 60–75 7.8 (1) 7.8 (1) 7.7 (0.9) 7.8 (0.9) 38.9 (6.2) 37.6 (5.7) 37 (5.9) 38.7 (6.5)
  76 +  7.5 (0.8) 7.4 (0.9) 7.4 (0.9) 7.4 (0.9) 33.8 (5.7) 33.4 (5.2) 32 (5.5) 32.9 (5.7)
Onan 60–75 7.8 (1) 7.9 (1.1)   7.7 (1) 37.2 (5.4) 36.6 (5.5)   36.4 (5.5)
Female
Unnan 60–75 6.2 (0.7) 6.2 (0.7) 6.2 (0.7) 6.2 (0.7) 23.7 (3.7) 25.3 (3.7) 24.3 (3.9) 24.1 (3.4)
  76 +  6.1 (0.8) 5.9 (0.6) 5.9 (0.6) 5.9 (0.8) 21 (3.8) 22.2 (4.1) 21.9 (3.9) 22 (3.8)
Oki 60–75 6.4 (0.7) 6.3 (0.6) 6.3 (0.7) 6.4 (0.8) 24.4 (3.6) 23.5 (3.5) 23.9 (3.7) 23.9 (3.8)
  76 +  6.2 (0.8) 6.1 (0.8) 6.1 (0.8) 6 (0.6) 21 (3.7) 20.5 (3.6) 21.2 (4.1) 20.9 (3.7)
Onan 60–75 6.4 (0.7) 6.3 (0.7)   6.4 (0.8) 23.8 (3.9) 24.3 (4.2)   23.6 (3.8)