Sleep, light exposure at night, and psychological wellbeing during pregnancy

BMC Public Health

Table 2 Sleep Quality at 2nd and 3rd Trimesters (n = 115)

Variables	Mean (SD)		Cohen’s d	p-value
Variables	2^nd trimester	3^rd trimester
Global PSQI score	5.7 (2.6)	6.2 (2.9)	0.18	0.046*
Subjective sleep quality	1.0 (0.62)	1.1 (0.62)	0.16	0.116
Sleep latency	1.8 (1.7)	1.9 (1.6)	0.06	0.407
Sleep duration	0.9 (0.9)	1.1 (0.9)	0.20	0.026*
Sleep efficiency (%)	87.9 (12.9)	86.6 (12.4)	0.10	0.375
Sleep medication	0.04 (0.30)	0.01 (0.09)	0.15	0.250
Daytime dysfunction	1.0 (1.0)	0.9 (1.1)	0.10	0.379
Sleep disturbance	9.9 (4.4)	11.1 (4.4)	0.27	0.002*

Abbreviations: PSQI Pittsburgh Sleep Quality Index. SD standard deviation
Data reported as mean (SD) and p-value reported according to paired-sample t-test analysis

ISSN: 1471-2458