Table 3.

Distribution of Persian BISQ items within the scoring system among the infants

Items	Number (%) or Mean ± SD
Sleep arrangement
Infant crib in separate room	23(3.6)
Infant in crib in parents’ room	327(50.6)
In parent’s bed	293(45.4)
Infant crib in room with sibling	3(0.5)
Sleep position
On his/her belly	211(32.7)
On his/her side	112(17.3)
On his/her back	323(50.0)
Sleep situation
While feeding	534(82.7)
Being rocked	78(12.1)
Being held	12(1.9)
In bed alone	17(2.6)
In bed near parent	5(0.8)
Sleep onset time (hour: minute)	11.26 ± 1.07
Nocturnal sleep duration (hour)	7.71 ± 1.28
Daytime sleep duration (hour)	3.81 ± 1.63
Night waking duration (hour)	1.31 ± 1.13
Nocturnal sleep latency (hour)	0.32 ± 0.23
Parents’ perception
Not a problem	568(87.9)
A small problem	77(11.9)
A very serious problem	1(0.2)

Abbreviations BISQ: Brief Infant Sleep Questionnaire; IQR: Interquartile range