Table 1 Patients related characteristics and adjusted associated factors with frequent hospital separations for rheumatoid arthritis patients in Western Australia (1995–2014)

Sex

Male

13,798 (27.4%)

10,298 (74.6%)

3500 (25.4%)

1

1

–

Female

36,555 (72.6%)

28,427 (77.8%)

8128 (22.2%)

1.18 (1.13–1.24)

1.21 (1.15–1.26)

.01

Age groups

≤ 19‡

546 (1.1%)

254 (46.5%)

292 (53.5%)

1

1

–

20–29

1,334 (2.6%)

945 (70.8%)

389 (29.2%)

2.79 (2.27–3.43)

2.74 (2.23–3.37)

< .01

30–44

5,373 (10.7%)

4,055 (75.5%)

1318 (24.5%)

3.53 (2.95–4.23)

3.52 (2.94–4.21)

 < .01

45–59

13,269 (26.4%)

10,541 (79.4%)

2728 (20.6%)

4.44 (3.73–5.28)

4.45 (3.74–5.29)

< .01

60–69

11,815 (23.4%)

9,381 (79.4%)

2434 (20.6%)

4.43 (3.72–5.27)

4.45 (3.74–5.30)

< .01

70–84

15,361 (30.5%)

11,620 (75.6%)

3741 (24.4%)

3.57 (3.00–4.24)

3.55 (2.99–4.22)

< .01

85+

2655 (5.3%)

1929 (72.7%)

726 (27.3%)

3.05 (2.53–3.68)

2.97 (2.46–3.59)

< .01

ARIA classification

Remote

3053 (6.1%)

2303 (75.4%)

750 (24.6%)

1

1

–

Rural

8065 (16.0%)

6,223 (77.2%)

1842 (22.8%)

1.10 (0.99–1.21)

1.12 (1.02–1.24)

.01

Major cities

39,235 (77.9%)

30,199 (77%)

9036 (23%)

1.08 (0.99–1.18)

1.11 (1.01–1.21)

.01