Skip to main content

Table 3 General PSQI results and mean sleep time comparison by group

From: The relationship between quality of sleep and night shift rotation interval

Variables Group A Group B Group C P-valuea
N (%)b N (%) N (%)
Sleep quality     <0.001
 Good 264 (61.3) 800 (52.0) 342 (40.2)  
 Poor 167 (38.7) 737 (48.0) 508 (59.8)  
Mean PSQIc Score 5.32 ± 2.98 5.75 ± 2.95 6.63 ± 3.01  
Mean sleep time(hour) 7.06 ± 1.58 6.63 ± 1.24 5.95 ± 1.47  
  1. acomparison by chi-squared test
  2. bPercentage of subjects who reply above 3 at each PSQI questionnaire
  3. cPittsburgh Sleep Quality Index