Table 1 Participants and their factor loadings for the two Q-studies

P1

7

1.38

2.2

Biologic

No

A

0.48

X

0.86

P2

36

2.38

6.7

NSAIDs

No

A

0.70

Did not load

-

P3

23

2.63

2.6

Biologic

Yes

A

0.55

X

0.70

P4

16

2.63

2.3

Biologic

No

A

0.52

X

0.89

P5

32

2.25

2.6

Steroids

No

A

0.51

Did not complete

-

P6

31

1.50

4.0

Biologic

No

A

0.59

X

0.62

P7

14

1.38

1.5

Biologic

No

A

0.52

Did not complete

-

P8

Unknown

0.00

0.5

Biologic DMARDs

No

B

0.70

X

0.86

P9

40

2.25

6.9

DMARDs

No

B

-0.50

Y

-0.72

P10

27

0.50

4.3

DMARDs

No

B

-0.46

X

0.78

P11

4

1.63

4.7

DMARDs Steroids

No

B

-0.70

X

0.58

P12

2

2.00

5.4

Biologic DMARDs

No

B

-0.54

X

0.57

P13

5

0.63

6.7

DMARDs

Yes

B

-0.46

Y

-0.63

P14

25

2.13

5.5

Biologic Steroids

No

B

-0.54

X

0.60

P15

2

0.75

7.9

Steroids

No

B

-0.85

X

0.76

P16

17

2.14

1.0

Biologic DMARDs

No

B

-0.42

Did not load

-

P17

9

0.38

1.2

Biologic

Yes

C

-0.52

X

0.90

P18

6

0.00

0.3

Steroids

No

C

-0.42

Y

-0.71

P19

1

0.125

1.3

DMARDs

No

C

-0.67

Did not load

-

P20

16

0.88

3.4

Biologic

No

C

-0.44

X

0.78

P21

30

0.62

2.3

No medication

No

C

-0.63

Y

-0.60

P22

3

0.00

1.9

DMARDs

No

C

-0.48

Did not load

-

P23

4

1.25

1.5

Biologic

No

C

-0.59

X

0.67

P24

20

2.50

5.0

DMARDs

No

Did not complete

-

X

0.81

P25

30

0.88

0.3

Biologic

No

Did not load

-

X

0.55

P26

12

0.75

2.0

DMARDs

No

Did not load

-

X

0.76

P27

18

1.57

3.6

DMARDs

Yes

Did not load

-

Y

-0.70

P28

13

2.30

5.0

DMARDs

Yes

Did not load

-

Y

-0.59

P29

4

3.00

2.0

DMARDs Steroids

No

Did not load

-

Did not load

-

P30

11

1.13

1.7

DMARDs

No

Did not load

-

Did not load

-

P31

14

0.75

1.5

DMARDs

No

Did not load

-

Did not load

-

Overall mean (SD)

15.7 (11.3)

1.4 (0.9)

3.2 (2.1)