Table 3 Comparison of the Pittsburgh Sleep Quality Index (PSQI) between patients with different levels of asthma control.

From: The prevalence of sleep disturbance among asthmatic patients in a tertiary care center

PSQI items

Asthma control levels

p value

Well-controlled

N = 67

Partially controlled

N = 55

Uncontrolled

N = 78

PSQI > 5, n (%)

25 (37%)

43 (78%)

64 (82%)

< 0.001

Global PSQI (0–21)

5.12 ± 3.2

9.07 ± 3.9

9.69 ± 3.9

< 0.001

PSQI domains (0–3)

Subjective sleep quality

0.7 ± 0.89

1.29 ± 0.94

1.69 ± 0.68

< 0.001

Sleep latency

0.82 ± 1.0

1.53 ± 0.92

1.64 ± 0.98

< 0.001

Sleep duration

1.06 ± 1.14

1.78 ± 1.23

1.51 ± 1.26

0.004

Sleep efficiency

0.61 ± 0.89

1.45 ± 1.3

1.21 ± 1.25

< 0.001

Sleep disturbances

1.13 ± 0.63

1.53 ± 0.6

1.85 ± 0.58

< 0.001

Use of sleeping medication

0.07 ± 0.4

0.22 ± 0.7

0.38 ± 0.9

0.035

Daytime dysfunction

0.72 ± 0.97

1.27 ± 1.0

1.41 ± 0.97

< 0.001

  1. PSQI Pittsburgh Sleep Quality Index.