T F R γ , t = 3.8812 + 0.21 ∗ I N F M O R T γ , t − 0.8327 ∗ L N ( E D Y R S 15 γ , t ) − 0.009 ∗ C O N T R U S E γ , t {\displaystyle TFR_{\gamma ,t}=3.8812+0.21*INFMORT_{\gamma ,t}-0.8327*LN(EDYRS15_{\gamma ,t})-0.009*CONTRUSE_{\gamma ,t}}
