Table 2.

Structural Equation Variables and Definitions

Wakefulness Structural Equation Model
Wakefulness at 6 Weeks
Awake & Content 6 am- 12 pm	Average time across diary days spent awake & content during this period (minutes)
Awake & Content 12 pm- 6 pm	Average time across diary days spent awake & content during this period (minutes)
Awake & Content 6 pm- 12 am	Average time across diary days spent awake & content during this period (minutes)
Wakefulness at 24 Months
Awake & Content Average Duration 24hr	Average duration awake & content across diary days (minutes)
Awake & Content Minimum Duration	Minimum length of time spent awake & content (minutes)
Awake & Content Maximum Duration	Maximum length of time spent awake & content (minutes)
Fuss Structural Equation Model
Fuss at 6 Weeks
Fuss 6 am- 12 pm	Average time across diary days spent in fuss state during this period (minutes)
Fuss 12 pm- 6pm	Average time across diary days spent in fuss state during this period (minutes)
Fuss at 16 Months
Attention Symptoms	TSC Subscale: Measuring ability to pay attention
Self Regulation	TSC Subscale: Measuring ability to self sooth
Attachment Symptoms	TSC Subscale: Measuring attachment to parents
Fuss at 24 Months
Fuss Maximum Duration	Maximum length of time spent in fuss (minutes)
Fuss Frequency 24hr	Average frequency of fuss states across diary days