Fig. 2
From: Sleep-wake cycle on amplitude-integrated EEG and neuroimage outcomes in newborns
Estimated cumulative probability of cyclicity between Groups I and II (95 % confidence intervals (CI) are presenting as gray zone). Estimated time to sleep-wake cyclicity according to Groups I and II were derived from Cox regression models. Group I was infants with favorable brain image findings and Group II was infants with severe brain image findings. The solid line is Group I and gray zone indicates 95 % CI. The dot line indicates Group II. Cumulative probability of cyclicity is higher in Group I compared to Group II. Between the two groups, differences are significant after about 240 h after birth