Density curvature parameter

• I
Higgsy
If I know the density curvature parameter for today $$\Omega_{k,0} = \frac{-c^{2}k}{R_{0}H_{0}}$$ then is it possible to surmise what it would be, say, during the matter dominated era $$\Omega_{k,t} = \frac{-c^{2}k}{R(t)H(t)}$$ ?