The correct (event weighted) average of k(t), [k(t)], has been calculated for pseudostationary laser-induced polymerization for a kinetic scheme with chain-length dependent termination and compared to the average (k) over bar(t) obtained by formally solving for k(t) the expression for the second moment of the chain-length distribution valid for chain-length independent termination (represented by the product of rate of polymerization v(p) and weight average degree of polymerization (P) over bar(W)). It is shown that there is a fair agreement between the two quantities. This may be used to recover experimentally the power-law governing the dependence of k(t) on chain-length, especially its exponent.