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Table. 1.

Table. 1.

Characteristics of subjects before and after inverse probability of treatment weighting (IPTW)

Characteristics of patientsBefore weighting, N (%)After weighting, N (%)

non-RA patientRA patientnon-RA patientRA patient
Age46.93 (17.17)a56.36 (15.72)a47.2 (17.50)a48.3 (96.88)a

SexMale570,198 (47.2)11,710 (1.0)581,917 (24.3)593,744 (24.8)
Female603,893 (50.0)21,412 (1.8)625,337 (26.1)592,572 (24.8)

Insurance typeMedical1,136,410 (94.1)30,839 (2.6)1,167,267 (48.8)1,143,107 (47.8)
Medicaid36,225 (3.0)2,174 (0.2)38,422 (1.6)41,569 (1.7)
Veterans1,456 (0.1)109 (< 0.1)1,565 (0.1)1,640 (0.1)

Total1,174,091 (97.2)33,122 (2.8)1,207,254 (50.4)1,186,316 (49.6)

mean (standard deviation)

RA: rheumatoid arthritis

Korean J Clin Pharm 2019;29:109-14 https://doi.org/10.24304/kjcp.2019.29.2.109
© 2019 Korean J Clin Pharm