Table 2. The selection of informative risk factors for overall data, and gender specific data using L1 penalization.

The informative and non-informative variables are represented with a ✔ and ✘ respectively.

	gender	smoking	diabetes	BP	Anaemia	age	EF	sodium	cr	pl	CPK
Male & Female	✘	✘	✘	✔	✔	✔	✔	✔	✔	✘	✘
Male	-	✘	✘	✔	✘	✔	✔	✔	✔	✔	✔
Female	-	✔	✔	✔	✔	✔	✘	✘	✔	✘	✔