save data in DB (PRO)

If I add a radio field as Gender with value Male and Female, Male or Female will be inserted into wp_usermeta.

    [user_gender] => Array
        (
            [0] => Female
        )

Is it possible to insert 1 or 2? And 1 means Male, 2 means Female. Like this

    [user_gender] => Array
        (
            [0] => 2
        )

As checkbox with Yes or No, it saves like

Array
        (
            [0] => a:1:{i:0;s:3:"Yes";}
        )

Is it possible to save just like

Array
        (
            [0] => 0
        )

or

Array
        (
            [0] => 1
        )

[0] => 0 means Yes, and [0] => 1 means No.

I need to do this because I have to make a user search page.