{"id":55908,"date":"2025-02-07T08:59:17","date_gmt":"2025-02-07T11:59:17","guid":{"rendered":"https:\/\/mindthegraph.com\/blog\/?p=55908"},"modified":"2025-02-25T09:05:25","modified_gmt":"2025-02-25T12:05:25","slug":"incidence-vs-prevalence","status":"publish","type":"post","link":"https:\/\/mindthegraph.com\/blog\/cs\/incidence-vs-prevalence\/","title":{"rendered":"Incidence vs. prevalence: Kl\u00ed\u010dov\u00e9 ukazatele pro m\u011b\u0159en\u00ed onemocn\u011bn\u00ed<\/strong>"},"content":{"rendered":"

Pochopen\u00ed rozd\u00edlu mezi incidenc\u00ed a prevalenc\u00ed m\u00e1 z\u00e1sadn\u00ed v\u00fdznam pro sledov\u00e1n\u00ed \u0161\u00ed\u0159en\u00ed onemocn\u011bn\u00ed a pl\u00e1nov\u00e1n\u00ed \u00fa\u010dinn\u00fdch strategi\u00ed v oblasti ve\u0159ejn\u00e9ho zdrav\u00ed. Tato p\u0159\u00edru\u010dka objas\u0148uje kl\u00ed\u010dov\u00e9 rozd\u00edly mezi incidenc\u00ed a prevalenc\u00ed a nab\u00edz\u00ed pohled na jejich v\u00fdznam v epidemiologii. Incidence m\u011b\u0159\u00ed v\u00fdskyt nov\u00fdch p\u0159\u00edpad\u016f za ur\u010dit\u00e9 obdob\u00ed, zat\u00edmco prevalence poskytuje p\u0159ehled o v\u0161ech existuj\u00edc\u00edch p\u0159\u00edpadech v ur\u010dit\u00e9m okam\u017eiku. Objasn\u011bn\u00ed rozd\u00edlu mezi t\u011bmito pojmy prohloub\u00ed va\u0161e porozum\u011bn\u00ed tomu, jak ovliv\u0148uj\u00ed strategie v oblasti ve\u0159ejn\u00e9ho zdrav\u00ed a \u0159\u00edd\u00ed z\u00e1sadn\u00ed rozhodnut\u00ed v oblasti zdravotn\u00ed p\u00e9\u010de.<\/p>\n\n\n\n

Kl\u00ed\u010dov\u00e9 poznatky: Incidence vs. prevalence p\u0159i sledov\u00e1n\u00ed onemocn\u011bn\u00ed<\/strong><\/h2>\n\n\n\n

Incidence vs. prevalence jsou z\u00e1kladn\u00edmi epidemiologick\u00fdmi ukazateli, kter\u00e9 poskytuj\u00ed p\u0159ehled o \u010detnosti v\u00fdskytu onemocn\u011bn\u00ed a jsou vod\u00edtkem pro z\u00e1sahy v oblasti ve\u0159ejn\u00e9ho zdrav\u00ed. Ob\u011b ukazatele poskytuj\u00ed cenn\u00e9 informace o zdravotn\u00edm stavu populace, pou\u017e\u00edvaj\u00ed se v\u0161ak k zodpov\u011bzen\u00ed r\u016fzn\u00fdch ot\u00e1zek a po\u010d\u00edtaj\u00ed se r\u016fzn\u00fdmi zp\u016fsoby. Pochopen\u00ed rozd\u00edlu mezi incidenc\u00ed a prevalenc\u00ed pom\u00e1h\u00e1 p\u0159i anal\u00fdze trend\u016f onemocn\u011bn\u00ed a pl\u00e1nov\u00e1n\u00ed \u00fa\u010dinn\u00fdch z\u00e1sah\u016f v oblasti ve\u0159ejn\u00e9ho zdrav\u00ed.<\/p>\n\n\n\n

V\u00fdskyt: M\u011b\u0159en\u00ed nov\u00fdch p\u0159\u00edpad\u016f v \u010dase<\/strong><\/h3>\n\n\n\n

Incidence m\u011b\u0159\u00ed v\u00fdskyt nov\u00fdch p\u0159\u00edpad\u016f v populaci za ur\u010dit\u00e9 obdob\u00ed, co\u017e poukazuje na riziko a rychlost p\u0159enosu onemocn\u011bn\u00ed. M\u011b\u0159\u00ed, jak \u010dasto se objevuj\u00ed nov\u00e9 p\u0159\u00edpady, a ukazuje riziko n\u00e1kazy v ur\u010dit\u00e9m \u010dasov\u00e9m horizontu.<\/p>\n\n\n\n

Incidence pom\u00e1h\u00e1 pochopit, jak rychle se nemoc \u0161\u00ed\u0159\u00ed, a identifikovat nov\u00e9 zdravotn\u00ed hrozby. Je u\u017eite\u010dn\u00e1 zejm\u00e9na p\u0159i studiu infek\u010dn\u00edch onemocn\u011bn\u00ed nebo stav\u016f s rychl\u00fdm n\u00e1stupem.<\/p>\n\n\n\n

V\u00fdpo\u010det incidence<\/strong>:
Vzorec pro \u010detnost je jednoduch\u00fd:<\/p>\n\n\n\n

M\u00edra v\u00fdskytu=Po\u010det nov\u00fdch p\u0159\u00edpad\u016f za ur\u010dit\u00e9 \u010dasov\u00e9 obdob\u00edPopulace ohro\u017een\u00e1 b\u011bhem t\u00e9ho\u017e obdob\u00ed<\/p>\n\n\n\n

Prvky<\/strong>:<\/p>\n\n\n\n

Nov\u00e9 p\u0159\u00edpady<\/strong>: Pouze p\u0159\u00edpady, kter\u00e9 se vyskytnou v zadan\u00e9m \u010dasov\u00e9m obdob\u00ed.<\/p>\n\n\n\n

Ohro\u017een\u00e1 populace<\/strong>: Skupina osob, kter\u00e9 jsou na za\u010d\u00e1tku \u010dasov\u00e9ho obdob\u00ed bez n\u00e1kazy, ale jsou n\u00e1chyln\u00e9 k onemocn\u011bn\u00ed.<\/p>\n\n\n\n

Nap\u0159\u00edklad pokud se v populaci 10 000 obyvatel vyskytne v pr\u016fb\u011bhu roku 200 nov\u00fdch p\u0159\u00edpad\u016f onemocn\u011bn\u00ed, m\u00edra incidence bude:<\/p>\n\n\n\n

200\/(10 000)=0,02 nebo 2%<\/p>\n\n\n\n

To znamen\u00e1, \u017ee v tomto roce onemocn\u011blo 2% populace.<\/p>\n\n\n\n

Prevalence: Zachycen\u00ed cel\u00e9ho rozsahu onemocn\u011bn\u00ed<\/strong><\/h3>\n\n\n\n

Prevalence ozna\u010duje celkov\u00fd po\u010det p\u0159\u00edpad\u016f ur\u010dit\u00e9 nemoci nebo stavu, a to jak nov\u00fdch, tak ji\u017e existuj\u00edc\u00edch, v populaci v ur\u010dit\u00e9m \u010dasov\u00e9m okam\u017eiku (nebo za ur\u010dit\u00e9 obdob\u00ed). Na rozd\u00edl od incidence, kter\u00e1 m\u011b\u0159\u00ed m\u00edru nov\u00fdch p\u0159\u00edpad\u016f, prevalence zachycuje celkovou z\u00e1t\u011b\u017e danou nemoc\u00ed v populaci, v\u010detn\u011b osob, kter\u00e9 s dan\u00fdm onemocn\u011bn\u00edm \u017eij\u00ed ji\u017e n\u011bjakou dobu, a t\u011bch, u nich\u017e se pr\u00e1v\u011b objevilo.<\/p>\n\n\n\n

\""Propaga\u010dn\u00ed<\/a>
Vytv\u00e1\u0159ejte v\u011bdeck\u00e9 ilustrace bez n\u00e1mahy pomoc\u00ed Mind the Graph<\/a>.<\/figcaption><\/figure>\n\n\n\n

Prevalence se \u010dasto vyjad\u0159uje jako pod\u00edl populace a poskytuje tak p\u0159ehled o tom, jak je nemoc roz\u0161\u00ed\u0159en\u00e1. Pom\u00e1h\u00e1 p\u0159i posuzov\u00e1n\u00ed rozsahu chronick\u00fdch onemocn\u011bn\u00ed a dal\u0161\u00edch dlouhodob\u00fdch zdravotn\u00edch probl\u00e9m\u016f, co\u017e umo\u017e\u0148uje syst\u00e9m\u016fm zdravotn\u00ed p\u00e9\u010de efektivn\u011b rozd\u011blovat zdroje a pl\u00e1novat dlouhodobou p\u00e9\u010di.<\/p>\n\n\n\n

V\u00fdpo\u010det prevalence<\/strong>:
Vzorec pro v\u00fdpo\u010det prevalence je n\u00e1sleduj\u00edc\u00ed:<\/p>\n\n\n\n

Prevalence=Celkov\u00fd po\u010det p\u0159\u00edpad\u016f (nov\u00fdch + st\u00e1vaj\u00edc\u00edch)Celkov\u00e1 populace ve stejn\u00e9m \u010dase<\/p>\n\n\n\n

Prvky<\/strong>:<\/p>\n\n\n\n

Celkov\u00fd po\u010det p\u0159\u00edpad\u016f<\/strong>: Zahrnuje v\u0161echny osoby v populaci, kter\u00e9 v ur\u010dit\u00e9m \u010dasov\u00e9m okam\u017eiku trp\u00ed danou nemoc\u00ed nebo stavem, a to jak nov\u00e9, tak d\u0159\u00edve diagnostikovan\u00e9 p\u0159\u00edpady.<\/p>\n\n\n\n

Celkov\u00fd po\u010det obyvatel<\/strong>: Cel\u00e1 zkouman\u00e1 skupina osob, v\u010detn\u011b osob s nemoc\u00ed i bez n\u00ed.<\/p>\n\n\n\n

Pokud nap\u0159\u00edklad 300 lid\u00ed z 5000 obyvatel trp\u00ed ur\u010ditou nemoc\u00ed, prevalence bude:<\/p>\n\n\n\n

300\/(5 000)=0,06 nebo 6%<\/p>\n\n\n\n

To znamen\u00e1, \u017ee v sou\u010dasn\u00e9 dob\u011b je touto nemoc\u00ed posti\u017eeno 6% populace.<\/p>\n\n\n\n

Prevalenci lze d\u00e1le rozd\u011blit na:<\/p>\n\n\n\n

Bodov\u00e1 prevalence<\/strong>: Pod\u00edl populace posti\u017een\u00e9 nemoc\u00ed v jednom \u010dasov\u00e9m okam\u017eiku.<\/p>\n\n\n\n

Prevalence obdob\u00ed<\/strong>: Pod\u00edl populace zasa\u017een\u00e9 b\u011bhem ur\u010dit\u00e9ho obdob\u00ed, nap\u0159\u00edklad b\u011bhem jednoho roku.<\/p>\n\n\n\n

Prevalence je zvl\u00e1\u0161t\u011b u\u017eite\u010dn\u00e1 pro pochopen\u00ed chronick\u00fdch onemocn\u011bn\u00ed, jako je cukrovka nebo srde\u010dn\u00ed choroby, kdy lid\u00e9 \u017eij\u00ed s nemoc\u00ed po dlouhou dobu a syst\u00e9my zdravotn\u00ed p\u00e9\u010de mus\u00ed zvl\u00e1dat jak sou\u010dasn\u00e9, tak prob\u00edhaj\u00edc\u00ed p\u0159\u00edpady.<\/p>\n\n\n\n

Incidence vs. prevalence<\/strong><\/h2>\n\n\n\n

Incidence i prevalence jsou sice d\u016fle\u017eit\u00e9 pro pochopen\u00ed vzorc\u016f onemocn\u011bn\u00ed, ale m\u011b\u0159\u00ed r\u016fzn\u00e9 aspekty \u010detnosti onemocn\u011bn\u00ed. Hlavn\u00ed rozd\u00edly mezi t\u011bmito dv\u011bma ukazateli spo\u010d\u00edvaj\u00ed v \u010dasov\u00e9m r\u00e1mci, ke kter\u00e9mu se vztahuj\u00ed, a ve zp\u016fsobu jejich pou\u017eit\u00ed ve ve\u0159ejn\u00e9m zdrav\u00ed a v\u00fdzkumu.<\/p>\n\n\n\n

\u010casov\u00fd r\u00e1mec<\/strong><\/h3>\n\n\n\n

Incidence<\/strong>:
Incidence ud\u00e1v\u00e1 po\u010det nov\u00fdch p\u0159\u00edpad\u016f onemocn\u011bn\u00ed, kter\u00e9 se vyskytnou v ur\u010dit\u00e9 populaci za ur\u010dit\u00e9 \u010dasov\u00e9 obdob\u00ed (nap\u0159. m\u011bs\u00edc, rok). To znamen\u00e1, \u017ee incidence je v\u017edy spojena s \u010dasov\u00fdm r\u00e1mcem, kter\u00fd odr\u00e1\u017e\u00ed m\u00edru v\u00fdskytu nov\u00fdch p\u0159\u00edpad\u016f. Ukazuje, jak rychle se nemoc \u0161\u00ed\u0159\u00ed nebo jak\u00e9 je riziko vzniku onemocn\u011bn\u00ed ve stanoven\u00e9m obdob\u00ed.<\/p>\n\n\n\n

D\u016fraz je kladen na identifikaci po\u010d\u00e1tku onemocn\u011bn\u00ed. Sledov\u00e1n\u00ed nov\u00fdch p\u0159\u00edpad\u016f umo\u017e\u0148uje z\u00edskat p\u0159ehled o rychlosti p\u0159enosu onemocn\u011bn\u00ed, co\u017e je z\u00e1sadn\u00ed pro studium epidemi\u00ed, hodnocen\u00ed preventivn\u00edch program\u016f a pochopen\u00ed rizika n\u00e1kazy.<\/p>\n\n\n\n

Prevalence<\/strong>:
Prevalence naproti tomu m\u011b\u0159\u00ed celkov\u00fd po\u010det p\u0159\u00edpad\u016f (nov\u00fdch i st\u00e1vaj\u00edc\u00edch) v populaci v ur\u010dit\u00e9m \u010dasov\u00e9m okam\u017eiku nebo za ur\u010dit\u00e9 obdob\u00ed. Poskytuje p\u0159ehled o tom, jak je nemoc roz\u0161\u00ed\u0159en\u00e1, a nab\u00edz\u00ed obraz o celkov\u00e9m dopadu nemoci na populaci v dan\u00e9m okam\u017eiku.<\/p>\n\n\n\n

Prevalence vyjad\u0159uje jak d\u00e9lku trv\u00e1n\u00ed, tak i kumulaci p\u0159\u00edpad\u016f, co\u017e znamen\u00e1, \u017ee odr\u00e1\u017e\u00ed, kolik lid\u00ed s t\u00edmto onemocn\u011bn\u00edm \u017eije. Je u\u017eite\u010dn\u00e1 pro pochopen\u00ed celkov\u00e9 z\u00e1t\u011b\u017ee dan\u00e9 nemoci, zejm\u00e9na u chronick\u00fdch nebo dlouhotrvaj\u00edc\u00edch onemocn\u011bn\u00ed.<\/p>\n\n\n\n

Aplikace<\/strong><\/h3>\n\n\n\n

Incidence<\/strong>:
Incidence se b\u011b\u017en\u011b pou\u017e\u00edv\u00e1 ve ve\u0159ejn\u00e9m zdravotnictv\u00ed a epidemiologick\u00e9m v\u00fdzkumu ke studiu rizikov\u00fdch faktor\u016f a p\u0159\u00ed\u010din nemoc\u00ed. Pom\u00e1h\u00e1 ur\u010dit, jak se nemoc vyv\u00edj\u00ed a jak rychle se \u0161\u00ed\u0159\u00ed, co\u017e je z\u00e1sadn\u00ed pro:<\/p>\n\n\n\n