Marka la eego tirakoobka qaranka, Shiinaha ayaa leh mid ka mid ah heerarka ugu sarreeya ee isdilka dumarka adduunka, waana dalka kaliya ee la rumeysan yahay inuu saddex ilaa afar jeer ka badan yahay ragga isdilka ah marka loo eego dumarka. Farqigaani xitaa wuu ka sii muuqdaa dadka ka weyn da'da 65, iyadoo toban jeer ka badan ragga ay isdilaan dumarka. Ismiidaaminta isku dayga iyo is-xanuuninta ayaa u dhexeysa laba ilaa afar jeer ka badan dumarka. Cilmi-baadhayaashu waxay ku sababeen farqiga u dhexeeya isku dayga iyo is-xanuuninta ragga ee ragga iyagoo adeegsanaya siyaabo badan oo halis ah si ay naftooda u dhammeeyaan. Si kastaba ha noqotee, kala-saarista isku-dayga is-dilka ee la isku-dhamaystiran ee aan is-xanuuninta ahayn ayaa aan hadda lagu sameyn Mareykanka markii la ururinayo tirakoob heer qaran. Shiinaha ayaa leh mid ka mid ah heerarka ugu sarreeya ee is-dilka dumarka dumarka adduun
saddex ilaa afar jeer ka badan