The relationship between quality of sleep and night shift rotation interval

Table 4 Odds ratio about number of subjects who reply above 3 points at some PSQI questionnaire by group

Variables	Group A	Group B	Group C
Variables	OR^a (95 % CI^†)	OR (95 % CI)	OR (95 % CI)
Q1^b	Referent	1.617 (1.285–1.304)	1.669 (1.304–2.136)
Q2^c	Referent	1.131 (0.907–1.410)	1.294 (1.020–1.643)
Q3^d	Referent	1.176 (0.950–1.457)	1.014 (0.804–1.279)
Q4^e	Referent	1.325 (1.022–1.718)	2.096 (1.596–2.752)
Q5^f	Referent	1.920 (1.279–2.884)	2.757 (1.815–4.187)

^aodds ratio, ^†confidence interval
^bDuring the past month, how would you rate your sleep quality overall? (PSQI 6)
^cCannot get to sleep within 30 min (PSQI 5–a)
^dWake up in the middle of the night or early morning (PSQI 5–b)
^eDuring the past month, how often have you had trouble staying awake while driving, eating meals, or engaging in social activity? (PSQI 8)
^fDuring the past month, how much of a problem has it been for you to keep up enough enthusiasm to get things done? (PSQI 9)

ISSN: 2052-4374