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Table 2 Descriptive statistics, Cronbach's α, and score distributions for the HADS, by method of administration

From: Measuring health-related quality of life in adolescents and young adults: Swedish normative data for the SF-36 and the HADS, and the influence of age, gender, and method of administration

 

Anxiety

Depression

 

Telephone

(n = 300)

Mail

(n = 280)

Telephone

(n = 300)

Mail

(n = 285)

Mean

4.66

5.31

2.52

2.96

SD

3.35

4.14

2.27

3.14

α

.75

.83

.54

.78

Quartile 1

2.00

2.00

1.00

1.00

Median

4.00

5.00

2.00

2.00

Quartile 3

6.00

8.00

3.00

4.00

Range

0–19

0–20

0–14

0–18

% Ceiling

0.0

0.0

0.0

0.0

% Floor

6.0

10.4

14.3

19.3

% Case

    

   Mild (8–10)

10.7

16.1

2.3

3.9

   Moderate (11–14)

4.7

9.1

1.7

2.1

   Severe (≥15)

1.7

2.5

0.0

1.4