After controlling for prior health status, it was determined that volunteerism accounted for a 44% reduction in mortality.
ˈæftɚ kəntɹˈoʊlɪŋ fɔːɹ pɹˈaɪɚ hˈɛlθ stˈæɾəs, ɪt wʌz dɪtˈɜːmɪnd ðæt vˌɑːləntˈɪɹɪzəm ɐkˈaʊntᵻd fɚɹə fˈoːɹɾi fˈoːɹ pɚsˈɛnt ɹᵻdˈʌkʃən ɪn mɔːɹtˈælᵻɾi.