random_dummy_gender_peasant_effect

random_dummy_gender_peasant_effect = {
	hidden_effect = {
		random_list = {
			50 = {
				modifier = { # 3 times as likely if faith is male dominated
					add = 150
					rite = {
						rite_has_parameter = male_dominated_law
					}
				}
				modifier = {
					add = 50
					has_realm_law = male_preference_law
				}
				dummy_male = { save_scope_as = dummy_peasant_gender }
			}
			50 = {
				modifier = { # 3 times as likely if faith is female dominated
					add = 150
					rite = {
						rite_has_parameter = female_dominated_law
					}
				}
				modifier = {
					add = 50
					has_realm_law = female_preference_law
				}
				dummy_female = { save_scope_as = dummy_peasant_gender }
			}
		}
	}
}

As written in game/common/scripted_effects/00_dummy_gender_effects.txt.