By the 6-month follow-up parental presence was generally more predictive of sleep outcomes than was breastfeeding. Specifically, parental presence was significantly more important in explaining shorter continuous sleep periods (R
2 change=0.11, Total R 2=.14) and a decreased likelihood of waking in own bed (R 2 change=0.13, Total R
2 =.18) than was breastfeeding. Breastfeeding was more related to a shorter sleep onset latency at the 6-month follow-up than parental presence (R 2 change=0.07, Total R 2=.10). Regressions for night wakings, total sleep time at night, daytime naps and sleep problems were not significant. Overall models at the 6-month follow-up explained 5% to 18% of the variance in sleep outcomes.