求翻译：建立有效的社会保障制度的前提是最大程度地理解影响居民医疗消费的基本因素，以及这些因素对不同社会群体医疗消费的影响。是什么意思？

Establish an effective social security system on the premise that the most of it affect the residents of the basic factors of medical consumption, and different social groups, these factors influence health care spending.

Establishment of an effective system of social security is a prerequisite to understanding the greatest degree of impact on residents' health care spending on basic factors, as well as these factors affect health care spending among different social groups.

Establishes the effective social security systems the premise is the greatest degree understanding affects the fundamental factor which the inhabitant medical service expends, as well as these factors the influence which expends to the different social group medical service.

Establishing an effective social security system provided that the maximum understanding of fundamental factors affecting the residents medical consumer, and the impact of these factors on medical consumption of different social groups.

Establishing an effective social security system provided that the maximum understanding of fundamental factors affecting the residents medical consumer, and the impact of these factors on medical consumption of different social groups.