Skip to main content

Table 2 Normative values for the CAT score in the non-COPD participants

From: Derivation of normative data for the COPD assessment test (CAT)

 

Males

Females

Overall

Age group

40-49 years

50-59 years

60-69 years

70-79 years

80 years and above

All ages

40-49 years

50-59 years

60-69 years

70-79 years

80 years and above

All ages

All ages

Number of subjects (%)

12 (2)

43 (9)

85 (17)

82 (16)

18 (4)

240 (48)

14 (3)

49 (10)

99 (20)

78 (16)

20 (4)

260 (52)

500

Minimum score

1

1

0

0

1

0

0

0

0

0

1

0

0

5th percentile

1

1

0

0

1

0

0

1

0

1

1.5

0.5

0

10th percentile

2

2

1

1

3

1

1

2

1

1

2

1

1

25th percentile

2

3

2

2

4

3

3

2

2

3

3

2

2

50th percentile

5

5

4

5

6.5

4

5

6

5

5

4

5

5

75th percentile

9

6

7

8

10

8

8

10

8

9

11

9

8

90th percentile

12

10

10

14

12

12

9

17

12

13

21

13

12

95th percentile

20

13

12

15

14

15

10

19

21

16

30

18

16

Maximum score

20

25

20

19

14

25

10

26

27

21

36

36

36

Mean score

6.58

5.47

4.96

5.72

6.72

5.53

5.00

7.16

6.04

6.23

8.35

6.43

6

Standard Deviation, SD

5.48

4.39

4.18

4.78

3.49

4.45

2.96

5.76

5.58

4.69

8.85

5.59

5.09

Percentage of subjects at floora

0

0

8.2

7.3

5.5

5.4

7

2

8

3.8

5

5

5.2

Percentage of subjects at ceilingb

0

0

0

0

0

0

0

0

0

0

0

0

0

  1. aFloor represents the lowest score possible (zero for the overall score).
  2. bCeiling represents the highest score possible (40 for the overall score).
  3. CAT: COPD assessment test.