SDQ hyperactivity scores tended to be higher in boys than girls and decreased from 4 to 7 years in both sexes (Supplementary Figure 1). Conduct scores were low and differed little between the sexes and the two time points (Supplementary Figure 2). Girls and boys were equally exposed to adversity (p > 0.203) except for stressful life events at 1 ½ years (p = 0.029) (Table 1).
