small pairs OOP

[yegon]

Is calling with small PPs from the blinds against a late position pf raises profitable?

I just went through my PT stats, the sample is not big (10k hands at NL50) but I am in red for blind defense with all pairs under 99.

Could it be just because the sample is small? Or is it the combination of playing them just for set value + being OOP + LP raisers having weaker hands on average and not paying off?