This is the short edition of More or Less, first broadcast on the BBC World Service.

Hello and welcome to More or Less on the BBC World Service,

with a programme that looks for the truth behind the numbers in news, in life and in politics,

and I'm Tim Halford.

Now, do we have the data we need to tackle poverty around the world?

The UN, for example, sets sustainable development goals,

setting out aims for how can improve the lives of the poor and the disadvantaged.

But it's hard to know whether those goals are being achieved if we don't have the data.

Now many people recognise this.

The UN, for example, set up an expert panel on the data revolution about 18 months ago.

And the Sudanese British telecoms billionaire, Mo Ibrahim,

has also been calling for a data revolution.

But some campaigners are going one step further.

We believe that there is a sexist data crisis.

This is David McNair, Director of Transparency at the One Campaign.

There's a data crisis because we don't have the information that we need

that help governments plan and invest,

but also that will help journalists and civil society hold governance to a kind.

The reason why sexist is that girls and women are disproportionately left out of data collection.

They're vulnerable, they're unkinded, and therefore they don't matter.

This group of campaigners want governments and international organisations to fight poverty and as part of that.

They're calling on them to collect better statistics on girls and women.

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