Table 2: Demographic and clinical characteristics of consecutive patients diagnosed with PM/DM in Asia.

Prasad  
et al. [16]
Koh  
et al. [17]
Maoz  
et al. [18]
Louthrenoo  
et al. [19]
Porkodi  
et al. [20]
Wakata  
et al. [21]
Kang  
et al.
[22]
Lee  
et al. [23]
Tani  
et al. [24]
Chen  
et al. [25]
Mustafa and Dahbour  
[26]
Azuma et al. [27]So  
et al. [28]
Teh  
et al. [29]

Demographic data
 CountryIndiaSingaporeIsraelThailandIndiaJapanKoreaKoreaJapanTaiwanJordanJapanKoreaMalaysia
 Total number667535100519266412316553012115112
 Number of PM (%)38 (58)35 (47)15 (43)72 (72)24 (47)64 (70)22 (33)25 (61)9 (39)643 (39)11 (37)51 (42)53 (35)3 (25)
 Number of DM (%)28 (42)40 (53)20 (57)28 (28)27 (53)28 (30)44 (67)16 (39)14 (61)1012 (61)19 (63)70 (58)98 (65)9 (75)
 Women, %6165577870688168746963716158
 Mean age, years33.050.353.045.034.060.043.743.754.044.334.354.349.557.8

Clinical features
 Dysphagia, %4511NA49NANA15NANANA40232633
 ILD, %NA141123NANA40NA74NA48543333
 Arthralgia/arthritis, %4134NA20NANA38NANANA204628NA
 Overlaps with other connective tissue
 disease, %
1420645NANANANA13NA1024NANA

Laboratory features
 Positive ANA, %NA47NA69NANA64NANANA60494642
 Positive anti-Jo-1 Ab, %NANANANANANA14NA13NA71478
 Mean CK, IU/lNANANA2058NANA37782732NANA3633186442302717

Associated malignancy
 Total, (%)2 (3)17 (23)13 (37)5 (5)1 (2)12 (13)6 (8)16 (27)3 (13)128 (8)0 (0)20 (17)25 (17)5 (42)
 PM, (%)0 (0)2 (6)4 (27)1 (1)0 (0)2 (3)NA6 (24)0 (0)33 (4)0 (0)3 (6)2 (4)0 (0)
 DM, (%)2 (7)15 (38)9 (45)4 (14)1 (4)10 (36)NA5 (31)3 (21)95 (9)0 (0)17 (24)23 (24)5 (56)