The phrase "several variables" means that there are multiple factors or elements that can change or have an effect on a situation or outcome. Full definition
Whether you decide to actually get one will depend on several variables including what types of animals you have and how high - needs they are. (petsitterlv.com)
However, differences by sex and age were observed for several variables. (jamanetwork.com)
A rate is based on several variables including location, age, and gender, type of car, education and driving record. (carinsurancequote.net)