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Table 3 Comparison of the components of PSQI in cases and controls

From: Sleep disturbances are associated with increased pain, disease activity, depression, and anxiety in ankylosing spondylitis: a case-control study

PSQI components score Cases
n= 314
Controls
n= 102
Pvalue
Subjective sleep quality 1.01 ± 0.77 0.89 ± 0.79 0.127
Sleep latency 0.98 ± 0.89 0.69 ± 0.88 0.001
Sleep duration 0.68 ± 0.79 1.29 ± 0.86 0.000
Habitual sleep efficiency 0.95 ± 1.03 0.25 ± 0.64 0.000
Sleep disorders 1.21 ± 0.69 0.74 ± 0.63 0.000
Use of sleep medications 0.10 ± 0.46 0.01 ± 0.09 0.055
Daytime dysfunction 1.69 ± 0.95 1.63 ± 1.00 0.635
Total 6.62 ± 3.62 5.50 ± 2.51 0.020
  1. P values were obtained with the Mann-Whitney U test. PSQI, Pittsburgh Sleep Quality Index.