The missionary model is the best way to try and influence people. Only when someone feels that you care about THEM will they allow you into their confidence and give any credence to what you say.
Before a missionary ever talks about God, they meet the physical needs of the people they are serving. After those people learn that the missionary truly cares about them, only then will they hear what he/she has to say.
Beating people over the head with statistics does not show love or concern. If you want to help, donate time helping those whom you wish to help. Once your love for them is received as unconditional, only then will you have influence.