Impact of type 2 diabetes mellitus on interstitial lung disease risk in rheumatoid arthritis

Table 2 Baseline characteristics after matching, n (%)/mean ± SD

Baseline characteristics	RA+DM (n = 60523)	RA-DM (n = 60523)	P value
Age	69.06 (11.56)	69.1 (11.60)	0.986
Gender
Female	42031 (69.45)	41985 (69.37)	0.774
Race
White	40840 (67.48)	40910 (67.59)	0.667
Black	10059 (16.62)	9997 (16.51)	0.632
Hispanic	6368 (10.52)	6391 (10.55)	0.830
Asian	1375 (2.27)	1384 (2.28)	0.862
Native	1196 (1.98)	1149 (1.89)	0.327
Other	685 (1.13)	692 (1.14)	0.850
Comorbidities
Gastro-esophageal reflux disease	21363 (35.30)	21363 (35.30)	1.000
Chronic obstructive pulmonary disease	7849 (12.97)	7833 (12.94)	0.898
Asthma	6271 (10.36)	6268 (10.36)	0.985
Smoking	5780 (9.55)	5761 (9.52)	0.860
Heart failure	29061 (48.02)	29049 (48.00)	0.950
Chronic kidney disease	20373 (33.66)	20348 (33.62)	0.884
Atrial fibrillation	9868 (16.30)	9863 (16.30)	0.975
Ventricular tachycardia	1065 (1.76)	1059 (1.75)	0.913
Hypertension	53568 (88.51)	53525 (88.44)	0.705
Obesity	19604 (32.39)	19580 (32.35)	0.888
Alcohol use	1132 (1.87)	1129 (1.87)	0.966
Steroids use	5767 (9.53)	5760 (9.52)	0.953
Coronary artery disease	21901 (36.19)	21890 (36.17)	0.952

RA: Rheumatoid arthritis; DM: Diabetes mellitus.