Table 1.

Baseline Sample Features of the Analytical Sample (Growing Up in Ireland, Wave 1)

Baseline sample features (Wave 1)	M (SD)/proportion
Maternal age	32.5 (4.7)
Lone‐parent household (ref. two‐parent household)	.09
Mother has tertiary education (ref. upper‐secondary or less)	.62
Mother employed part time prior to birth (ref. employed full time)	.22
Mother out of paid work prior to birth (ref. employed full time)	.17
Mother is of Irish descent (ref. not)	.88
Household receives any welfare payment (ref. does not)	.17
Parental income: Second quintile (groups based on quintiles a , ref. first)	.17
Parental income: Third quintile	.21
Parental income: Fourth quintile	.25
Parental income: Fifth quintile	.23
N	6,303

^a Quintiles are defined with reference to the income distribution for the original cohort sample at W1.