Future saving rates of these sectors will of course vary in response to a variety of influences, such as demographics, expectations, and changes in preferences.
Future saving rates will vary in response, influences, demographics, expectations and preference. 
mnli hypothesis: Future saving rates will vary in response, influences, demographics, expectations and preference.  premise: Future saving rates of these sectors will of course vary in response to a variety of influences, such as demographics, expectations, and changes in preferences.