Less Life Occurrency: Lower Vs. Middle Class

I believe lower class person have less life expectancy than a middle class person because a lot of low class people can’t afford to go to the hospital or doctors due to the lack of money or health insurance. Middle class people usually can afford health insurance and healthier lives. Lower class people usually have man labor jobs such as factories which can cause injuries and maybe types of diseases. While a middle class person most likely have an office job which they cannot get any serious injuries and they are not suppose to any