Table 3 Fit statistics of individual items

Dysuria

1

Pain on urination

0.380

0.367

0.046

0.765

2

Difficult to empty bladder

0.370

0.375

0.047

0.928

3

Uncomfortable pressure around the bladder

0.375

0.365

0.046

0.831

Frequency

4

Frequent urination - daytime

0.704

0.679

0.034

0.474

5

Increased urge for urination

0.682

0.682

0.034

0.999

6

Has to hurry to the toilet

0.737

0.690

0.030

0.118

7

Incontinence

0.672

0.704

0.032

0.314

Lower back

8

Pain in lower back

0.957

0.957

0.011

0.993

9

Uncomfortable pressure in lower back

0.957

0.957

0.011

0.993

General

10

Feeling unwell

0.663

0.651

0.041

0.770

11

Fever

0.705

0.669

0.044

0.422

12

Shivering

0.629

0.672

0.043

0.327

Single items

13

Burning sensation on urination

–

–

–

–

14

Smelly urine

–

–

–

–

15

Urine changed appearance

–

–

–

–

16

Blood in urine

–

–

–

–

17

Frequent urination - nighttime

–

–

–

–

18

Pain around the bladder

–

–

–

–

Dysuria

19

Pain on urination

0.396

0.365

0.067

0.650

20

Difficulty emptying bladder

0.385

0.403

0.067

0.790

21

Uncomfortable pressure around the bladder

0.397

0.390

0.066

0.917

Frequency

22

Frequent urination - daytime

0.663

0.690

0.045

0.551

23

Increased urge to urinate

0.699

0.693

0.046

0.888

24

Has to hurry to the toilet

0.758

0.704

0.043

0.217

25

Incontinence

0.724

0.727

0.046

0.946

Lower back

26

Pain in lower back

0.966

0.967

0.014

0.987

27

Uncomfortable pressure in lower back

0.966

0.967

0.014

0.987

General

28

Feeling unwell

0.692

0.707

0.056

0.792

29

Fever

0.766

0.694

0.059

0.223

30

Shivering

0.671

0.714

0.059

0.457

Single items

31

Burning sensation on urination

–

–

–

–

32

Smelly urine

–

–

–

–

33

Urine changed appearance

–

–

–

–

34

Blood in urine

–

–

–

–

35

Frequent urination - nighttime

–

–

–

–

36

Pain around the bladder

–

–

–

–

Daily activities

37

Work

0.861

0.762

0.039

0.010*

38

Social activities

0.811

0.768

0.038

0.251

39

Exercise

0.758

0.775

0.036

0.652

40

Cycling

0.620

0.777

0.042

0.000**

41

Tasks in the home

0.792

0.767

0.040

0.538

Single items

42

Sleep

43

Sex