a precede-proceed based educational intervention in quality of life of women-headed households in iran

background: women-headed households are more exposed to social damages than other women. such condition remarkably influences the women's health-related life quality. the present study is aimed to investigate the effect of an educational intervention in quality of life of women-headed households under protection of tehran welfare organization, in 2015.   methods: in this quasi-experimental study with control group, 180 women-headed households participated. sampling method was random allocation. data collection tools were life quality standard questionnaire (whoqol-bref) and a researcher-made questionnaire about structures of ecological and educational diagnosis phase of precede-proceed model. validity and reliability of the questionnaire approved in a primary study. based on the results obtained from the primary study, the intervention was performed in the case group only. participants were followed one and three months after intervention. data were analyzed through spss v. 15 software using descriptive and analytical tests.   results: before intervention no significant difference was observed among the mean scores of life quality, behavioral factors, and knowledge, enabling, and reinforcing factors in the two groups. but, one month and three months after intervention a significant difference was observed between the mean scores of these variables (in five instances p< 0.001).   conclusion: intervention through the precede-proceed model improved the women-headed households' quality of life. the innovation of this study is using such intervention on quality of life in women-headed households for the first time.