Table 1 Characteristics and results of the baseline assessment by follow-up status of participants

 Age (years)

190

59.2 (± 11.9)

48

63.7 (± 9.5)

0.016

51

56.9 (± 9.4)

  -Females

147

58.4 (± 11.9)

40

63.6 (± 9.9)

0.013

43

56.7 (± 9.7)

 Females, n, (%)

190

147 (77.4)

48

40 (83.3)

0.368

51

43 (84.3)

 Height (m)

190

1.67 (± 0.08)

48

1.64 (± 0.07)

0.017

51

1.66 (± 0.08)

 Weight (kg)

190

77.3 (± 14.0)

48

73.1 (± 12.0)

0.059

51

75.3 (± 15.0)

 BMI (kg/m²)

190

27.1 (± 4.5)

48

26.5 (± 4.0)

0.401

51

26.9 (± 4.9)

 Previous falls (yes), n, (%)

190

25 (13.2)

48

11 (22.9)

0.092

51

14 (27.5)

 Physical activity (yes), n, (%)

190

137 (72.1)

48

36 (75.0)

0.688

51

26 (51.0)

 RA disease duration (y)²

190

9.0 (4.0–16.0)

48

11.0 (5.0–19.7)

0.33

51

10.0 (6.0–19.0)

 DAS28_CRP (score)²

189

2.07 (1.62–2.85)

45

2.33 (1.69–3.25)

0.161

50

2.35 (1.64–3.03)

  -Low disease activity ≤3.2, n, (%)

154 (81.1)

33 (66.8)

0.229

39 (76.5)

  -Moderate disease activity 3.2 ≤ 5.1, n, (%)

34 (17.9)

12 (25.0)

9 (17.6)

  -High disease activity > 5.1, n, (%)

1 (0.5)

0

2 (3.9)

 HAQ (score)²

190

0.37 (0.0–1.12)

48

0.81 (0.41–1.5)

0.001

51

0.75 (0.0–1.5)

 Handgrip strength (kg)

189

24.8 (± 9.0)

48

22.45 (± 8.2)

0.102

50

22.97 (± 8.1)

 Gait speed (m/s)

190

1.24 (± 0.21)

48

1.23 (± 0.25)

0.70

51

1.19 (± 0.2)

 CRT (sec)

187

9.43 (± 3.2)

47

9.69 (±3.6)

0.635

51

10.32 (± 3.8)

 SPPB (total score)²

190

11.0 (11.0–12.0)

48

11.0 (10.0–12.0)

0.645

51

11.0 (10.0–12.0)

  -Poor performer: 0–6, n, (%)

7 (3.7)

1 (2.1)

0.710

3 (5.9)

  -Moderate performer: 7–9, n, (%)

20 (10.5)

7 (14.6)

7 (13.7)

  -Good performer: 10–12, n, (%)

163 (85.8)

40 (83.3)

41 (80.4)

 FICSIT-4 (score)²

190

5.0 (0.0)

48

5.0 (4.0–5.0)

0.030

51

5.0 (0.0)

 Low FICSIT-4 (1–4), n, (%)

190

28 (14.7)

48

14 (29.2)

0.019

51

10 (19.6)

 ASM/h² (kg/m²)

190

6.89 (± 1.04)

48

6.64 (± 0.9)

0.13

51

6.73 (± 1.0)

 ASM/BMI (m²)

190

0.73 (± 0.1)

48

0.69 (± 0.1)

0.04

51

0.70 (± 0.1)

 CRTP_rel (W/kg)

182

10.35 (± 2.8)

44

9.73 (± 2.5)

0.18

49

9.45 (± 2.0)

 2LJP_rel (W/kg)

169

27.19 (± 6.9)

45

25.32 (± 5.3)

0.05

45

25.60 (± 6.8)

 EFI (%)

169

81.20 (± 17.3)

45

83.67 (± 16.0)

0.38

45

75.74 (± 17.3)