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Table 1 Characteristics of the studies included in the systematic review

From: The prevalence of sarcopenia in spondyloarthritis patients: a meta-analysis

Study

Country/Region

Type of study

Classification used

Assessment method for muscle mass

Correction method for muscle mass

Age (mean (SD))

(total-men-women)

BMI (mean (SD))

(total-men-women)

Disease duration

(m, mean (SD))

(total-men-women)

Sample (n)

(total-men-women)

Muscle mass

(mean (SD))

(total-men-women)

Grip strength

(mean (SD))

(total-men-women)

Physical performance

(mean (SD))

(total-men-women)

Aguiar 2014 [14]

Portugal/Europe

Case-control study

Lee’s equation

Measuring Tape and Skinfold Caliper

Sex, Age, and Ethnicity

45.5 (13.4)-NA-NA

NA

10.9 (11.6)-NA-NA

60-29-31

AS 36-NA-NA PsA 24-NA-NA

7.7 (1.0)-7.8 (0.9)

-7.5 (1.0)

NA

NA

Barone 2018 [15]

Italy/Europe

Cross section survey

EWGSOP for sarcopenia

Other for presarcopenia

BIA 101

Height

AS 51.6 (8.8)-NA-NA

PsA 55.3 (9.1)-NA-NA

AS 24.9 (2.5)-NA-NA

PsA 25.6 (3.0)-NA-NA

AS 14.5 (8.4)-NA-NA

PsA 11.1 (8.1)-NA-NA

AS 22-14-8

PsA 70-32-38

NA

NA

NA

Barros 2012 [16]

Brazil/South American

Cohort study

Baumgartner

DXA

Height

NA

25.7 (NA)-NA-NA

NA

30-24-6

NA

NA

NA

Fitzgerald 2017 [17]

Ireland/Europe

Cross section survey

Other

BIA

Height

50.8 (11.1)-51 (10.5)

-50.4 (13.7)

28.8 (6.3)-29 (6.9)

-27.8 (3.4)

24 (11.7)-24.5 (11.6)

-22.2 (12.7)

43-34-9

8.7 (1.7)-9.2 (1.6)

-7.0 (0.6)

NA

NA

Kavadichanda 2022 [18]

India/Asia

Cross section survey

AWGS

DXA

Height

SpA 38.8 (7.5)-NA-NA

PsA 41.3 (9.3)-NA-NA

SpA 23.6 (NA)-NA

-NA

PsA 25.1 (NA)-NA-NA

NA

SpA 58-44-14

PsA 56-28-28

Total 6.9 (1.1)-NA

-NA

NA

NA

Krajewska 2017 [19]

Poland/Europe

Case-control study

EWGSOP

BIA (InBody170)

Height

65.6 (5.9)-NA-NA

30.1 (5.8)-NA-NA

11.1 (8.9)-NA-NA

51-0-51

6.44 (0.72)

NA

NA

Leite 2020 [20]

Brazil/South American

Cross section survey

Other

DXA

Height

NA

NA

NA

96-43-53

7.7 (1.3)-8.54 (1.29)

-6.94 (0.87)

NA

NA

Maghraoui 2016 [21]

Morocco/Africa

Cross section survey

EWGSOP for sarcopenia

Baumgartner for presarcopenia

DXA

Height

40.9 (11.0)-NA-NA

25.3 (4.0)-NA-NA

9.3 (7.9)-NA-NA

67-67-0

7.4 (0.8) -NA-NA

NA

NA

Merle 2023 [2]

France/Europe

Case-control study

EWGSOP2

DXA

Height

47.1 (13.7)-47.0 (13.6)

-47.3 (13.9)

26.0 (5.0)-25.8 (4.8)

-26.2 (5.2)

12.2 (9.0)-11.9 (10.4)

-12.6 (7.6)

103-50-53

7.4 (1.3)-8.0 (1.2)

-6.6 (1.0)

28.8 (13.1)-37.1 (12.9)-20.8 (6.9)

0.9 (0.4)-0.9 (0.4)-0.9 (0.4)

Neto 2022 [22]

Portugal/Europe

Cross section survey

EWGSOP2

BIA (InBody770)

Height

37.0 (7.0)-NA-NA

25.0 (NA)-NA-NA

7 (3.0)-NA-NA

27-18-9

NA

NA

0.8 (0.1)-NA-NA

Paccou 2020 [23]

France/Europe

Cohort study

Baumgartner

DXA

Height

NA

NA

NA

30-NA-NA

NA

NA

NA

Sequeira 2013 [24]

Portugal/Europe

Case-control study

Lee’s equation

Measuring Tape and Skinfold Caliper

Sex, Age, and Ethnicity

45.5 (13.4)-NA-NA

NA

10.9 (11.6)-NA-NA

60-29-31

NA

NA

NA

Song 2017 [25]

Sourth Korea/Asia

Cross section survey

AWGS

Korea criteria

DXA

Height

NA

NA

NA

60-60-0

NA

NA

NA

Soto 2023 [26]

Brazil/South merican

Diagnosis test

ASMM

DXA

Height

49.2 (14.2)-NA-NA

NA

NA

42-24-18

AS 35-NA-NA

PsA 7-NA-NA

NA

NA

NA

Tournadre 2017 [27]

France/Europe

Cross section survey

EWGSOP

DXA

Height

SpA 44.1 (12.0)

PsA 54.6 (11.0)

SpA 28.7 (5.1)

PsA 54.6 (11.0)

SpA 6.4 (9.4)

PsA 5.5 (6.8)

SpA 63-NA-NA

PsA 11-NA-NA

SpA 8.1 (1.6)

PsA 8.0 (1.7)

NA

NA

Younis 2021 [28]

Iraq/Asia

Cross section survey

EWGSOP

DXA

Height

36.6 (7.7)-NA-NA

28.4 (6.3)-NA-NA

6.9 (5.0)-NA-NA

50-47-3

8.0 (1.0)-NA-NA

32.9 (8.3)-NA-NA

0.9 (0.2)-NA-NA