aecee eo copa opa.

aecee cceoa a cop, aa eppea ax ye ae a e, o ea oop. aee apeox cceoax pecae coo eo copa epo apeoo opa o yaeo oee ye ae a pa pya e, ec cya. aee apeoo cceoa oe apaeo a ocee pax ee. o oe cooao a co opa ocpoe oe, cy poep ax, oyex py eoa, c eo oo oo e ooee cee o yaeo oee. aee ec eca pyoe eoo. opee oo ae aae opo a paa oe pee, e cao aee. o xapaepy opyae ocao aee oe oe, o oaae, o poecc poxo ececeo ocaoe ( aae, y p aaa), aopaop, .e. pooc cycceo coao cya. eya ae cpyc c oo ayo- eoex, ooax .. aece cceoa ae : , aa poooa eo [4, c. 315].

pecoey bopoco , opao, o o .

poooa pecoea opeeey cya o p pee, p o o oe coeco oca ce aop apye, oop o pyoocoac p p pee. oa p pee aoo eoa coyec aoo. ae cceoae aapye pooo, pecaee pecoea. p cooa poeox eoo pecoe oeac opeeee pyee cya aee a o, o pecoe cay ay opa o cee, oopy eooo oy p poee poo opoca, apep, ooceo opee apoo, aoo, oye aex .. cceoa oo ooec c poeee pax opoco, ocoax a cooa cpyyppoax opoco apoo a, a oope oeae ooe co pecoeo. poc aaec cope epo opa ye poo aaa opoco ooceo ypo x a, ooe poyy, peoe oyaecoo oee. poc oe oc cpyypoa ecpyypoa xapaep; epo cyae ce opaaee oea a o e e opoc, o opo - epep aae opoc acoc o oyex oeo. p poee opoca pya opaaex oe oepac oopaoy, oopa oceoa. epo cyae oyaec a oepe cpe ao py o o apaepa cpoaoo oea pee (cross-sectional study - "oepeoe" yee). o opo cyae oa a e pya opaaex, aaea ae, eoopao yaec eee opeeeoo epoa pee (longitudinal study - "poooe" yee). ae aee coyc p poee ox apeox cceoa. cyae aco oop, o ae eo opoca.