Aims. A conceptual clarification of the domain of social relationships
defines three aspects of social relationships (structure, function an
d quality), which have both alcohol-specific and general components. W
e analyse the correlations among post-treatment indicators of social r
elationships and the associations between these interpersonal variable
s and post-treatment drinking and subjective wellbeing. Design. This i
s a secondary analysis of data from an alcohol treatment outcome study
, in which subjects were randomly assigned to one of three treatment c
onditions and followed for 18 months. Setting. The outpatient treatmen
t program is located within a private psychiatric hospital tit the nor
th-eastern United States. Participants. We analyzed the 140 subjects w
ho completed a social network instrument 12 months following treatment
assignment. Intervention. This secondary analysis combined clients fr
om three treatment conditions, all of which were based upon social lea
rning theory. Measurements. Interview and questionnaire self-report da
ta were collected by trained interviewers. Findings. Indicators of soc
ial relationships are found to be relatively independent of one anothe
r. Only alcohol-specific social relationship indicators are significan
tly associated with drinking outcomes, and only general indicators are
significantly associated with subjective wellbeing. Functional indica
tors, addressing social interaction content, have stronger effects on
outcomes than structural or quality indicators. General and alcohol-sp
ecific support from friends have more influence than support from fami
ly; both surpass the influence of co-workers. Conclusions. A better un
derstanding of the roles of social relationships during the course of
treatment and recovery or relapse may help clarify how treatment perso
nnel cart utilize clients' interpersonal relationships more effectivel
y to maximize treatment effectiveness.