Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Percent of participants who met contingency criteria (TAC < 0.03 g/dl) each week during the Observation and Contingency Management phases. The percent of participants meeting contingency criteria was higher in the Contingency Management phase compared to the Observation phase (** p < 0.01).
