In the low income stratum, highly significant associations (p < 0.001) are observed between 'less than good' SRH and 4 of the social ties variables: felt alone, received no phone call, has no friends and not a member of a club.
The likelihood ratio test for goodness of fit of the interaction models compared to main effect models, showed that interactions between social ties and income in relation to 'less than good' self reported health were significant for 'no friends' and for 'living alone'; of borderline significance for 'felt alone' and 'no telephone call'; and not significant for 'no club membership'.