Primary analyses of BP change are based on intention to treat. For individuals without BP at the 6-month assessment and for those who had been taking antihypertensive medication,
3-month BP measurements were carried forward; if a 3-month BP measurement was unavailable, values were imputed using a “hot deck” procedure that drew values from participants in the advice only group. We also conducted post-hoc “on treatment” analyses limited to those participants in the established and established plus DASH groups who attended at least 15 intervention sessions.