Search results for "ANCOVA"
showing 5 items of 5 documents
Ancova metode ar pielietojumu biostatistikā
2019
Šajā darbā tiks apskatīta mūsdienās lielu nozīmi ieguvusī ANCOVA metode, kuru izmanto medicīniskos pētījumos. Īss ieskats tiek aplūkots divām metodēm-ANOVA metodei un lineārajai regresijai,lai saprastu kā ANCOVA metode tika izveidota. Tas ir ļoti nozīmīgi, jo tās veido ANCOVA metodi. Kā arī teorijas beigās apskata ANCOVA metodi. Metodi pielietojot jāpārbauda dažādi nosacījumi, tāpēc tika izveidots algoritms, kas spēj apvienot visas nepieciešamās darbības, kā arī tiek pievienots R programmas kods. Darba nobeigumā tiks apskatīti arī praktiski piemēri, kuri spēs parādīt tās nozīmīgumu reālās dzīves situācijās.
An alternative conception of PM10 concentration changes after short-term precipitation in urban environment
2018
Abstract In the article, a linear model is presented which describes a reduction of PM10 mass concentration in relation to the type of precipitation and water vapour content in the air. The model was built using covariance analysis. In studies of PM10 concentration changes, the results of 247 observations were used, which were carried out in the urban area. Concentration changes were archived during short-term (30 min) convection and large-scale rainfalls. For the determination of PM10 mass concentration, the reference method was used. To describe changes in PM10 concentration in the air after precipitation, a series of linear models were created, in which the explanatory variables were: th…
Stronger proprioceptive BOLD-responses in the somatosensory cortices reflect worse sensorimotor function in adolescents with and without cerebral pal…
2020
Graphical abstract
Evaluation of a liposomal food supplement containing conifer polyprenols on performance of amateur marathon and half marathon runners using blood bio…
2021
Darbā apkopota informācija par poliprenolu liposomālā uztura bagātinātāja “SuperCell” lietošanas ietekmi uz maratonu un pusmaratonu skrējējiem - amatieriem. Lai izpētītu poliprenolu efektivitāti fiziskās slodzes laikā, tika pētīti divu maratona skrējēju grupu asins bioķīmiskie parametri. Pētījuma dalībnieki bija 22 vīriešu dzimuma sportisti vecumā no 25 līdz 41 gadam, kuri tika sadalīti kontroles grupā (nelietoja poliprenolus) un produktu grupā - lietoja 30 mg poliprenolu liposomu mīkstā želatīna kapsulās 3 reizes dienā 4 ± 1 dienas pirms skrējiena. Pētījuma rezultāti parādīja, ka produktu grupai statistiski nozīmigi (p<0,05) tika izmainīti eritrocītu, hemoglobīna, limfocītu un laktāta radī…
A latent profile analysis of trait emotional intelligence to identify beneficial and risk profiles in well-being and job performance: a study among J…
2016
Trait emotional intelligence (EI) is a noteworthy psychological resource in nursing. However, its effects on well-being and job performance are inconsistent. Thus, we explored the latent beneficial and risk profiles of trait EI among 461 Japanese eldercare nurses. Latent profile analysis revealed six latent profiles. In addition, multivariate analysis of covariance (MANCOVA) showed that the profile with the highest overall scores on the trait EI dimensions was associated with the most beneficial outcomes (better well-being, higher job performance). In contrast, the profiles with lower overall scores on the trait EI dimensions showed negative outcomes. Moreover, a disproportional profile, ch…