  We consider the Calder\'on-Lozanovskii construction $\varphi(X_0,X_1)$ in the
context of quasi-Banach lattices and provide an extension of a result by V. I.
Ovchinnikov concerning the associated interpolation methods $\varphi^c$ and
$\varphi^0$. Our approach is based on the interpolation properties of
$(\infty,1)$-regular operators between quasi-Banach lattices.
