Help with hypothetical in OMaha Hi

Hi. You guys are a big help. My question is along the lines of odds.

Suppose you are holding: 9[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/spade.gif[/img] 2[img]/images/graemlins/heart.gif[/img]

You are in the BB.

LP limps and SB completes. 3 players to the flop.

Flop: 9[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/heart.gif[/img] pot=1.50
SB checks
Hero bets .50
LP calls
SB raises $1
Hero ?

You are probably a favorite here but forget that for a second.

You know that SB only raises with made hands like straights, flushes, bottom set,middle set, and top set. There's no straights or flushes here so you put him on either a bottom set or top set. You give yourself 50 % to be ahead.

How do you go about evaluating whether to call here ? Do you think about what possible holdings raiser could have ? So like I said I'm 50 % here ? And LP called so who knows what he has maybe an inside straight draw. You figure that you might be outdrawn 20 % of the time by the river with both players in. So you give yourself 30 % to win . If I get odds of 2 to 1 or better I should call ? Or is it that I'm 50 % to be ahead here so if I get even money (1:1) then should I call ? Which is more correct ? Thanks. I think it is 2 to 1 because we need the odds that will be ahead by the river, right ?