Variable IR IC95% p*
Familystructure          
Nuclear 0.75 0.45 - 1.24  
Seminuclear 1.33 0.43 - 4.11  
Extense 1.34 0.70 - 2.57  
Composed 0.88 0.42 - 1.85 0.52
DomesticRelations          
No problem 0.48 0.24 - 0.96  
Withproblematic 1.28 0.87 - 1.88 0.01**
Familyfunctioning          
Functionalfamily 0.43 0.26 - 0.73  
Dysfunctionalfamily 4.29 2.77 - 6.65 <0.001**
Social network          
Functionalnetwork 0.65 0.40 - 1.06  
Unfunctionalnetwork 1.47 0.92 - 2.33 0.02**
IR: incidence rate.
*p-value of the log-rank test for equality of survival function
**statistically significant differences.
Table 2: Incidence of non-adherence to DOTS for each family characteristics and social system with a confidence interval of 95%.