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Table 2 Comparison of the components of PSQI in cases and controls

From: Sleep quality in Chinese patients with rheumatoid arthritis: contributing factors and effects on health-related quality of life

PSQI components score

Cases (n = 131)

Controls (n = 104)

p

Subjective sleep quality

1.23 ± 0.74

0.63 ± 0.73

<0.001

Sleep latency

1.70 ± 1.04

0.70 ± 0.74

<0.001

Sleep duration

0.80 ± 1.05

0.70 ± 1.00

0.451

Habitual sleep efficiency

1.16 ± 1.19

0.15 ± 0.41

<0.001

Sleep disorders

1.65 ± 0.69

0.90 ± 0.72

<0.001

Use of sleep medications

0.52 ± 1.04

0.06 ± 0.27

<0.001

Daytime dysfunction

0.88 ± 0.74

0.73 ± 0.80

0.148

Total

7.93 ± 3.98

3.88 ± 1.89

<0.001

  1. Data are means (standard deviation) for continuous variables
  2. p values were obtained with the two-tailed t test
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Health and Quality of Life Outcomes

ISSN: 1477-7525

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