because gender may not be the most pressing source of inequality in every situation however there have been calls to shift focus from gender to diversity mainstreaming thus taking a wider approach to inequality siltanen p high quality readily accessible genderdisaggregated data supplies the foundation for both sound evidencebased policy making and gender monitoring and evaluation and is integral to gender impact assessment conversely the absence of differentiated data box makes it very difficult to understand the impact of gender equality and mainstreaming strategies and efforts