The phrase "a longitudinal part" is correct and usable in written English.
It can be used in contexts related to measurements, studies, or descriptions that involve length or duration along a specific axis or direction.
Example: "In our research, we focused on a longitudinal part of the data set to analyze trends over time."
Alternatives: "a lengthwise section" or "an extended segment".
As the study design includes a longitudinal part, we investigated whether CSF cortisol, 5-HIAA or DHEAS would predict subsequent suicide.
The COPD, Health status and Comorbiditi es (Chance) study is a monocentre study consisting of an observational cross-sectional part and a longitudinal part.
The current study is a monocentre, observational study consisting of a cross-sectional part (objectives 1, 3 and 4) and a longitudinal part (objective 2), see figure 1. Patients will be recruited from primary (general practitioners, GPs ), secondary (chest physicians) and tertiary (pulmonary rehabilitation) care.
Laparoscopic sleeve gastrectomy is a bariatric procedure in which a considerable longitudinal part of the stomach is removed and the remaining stomach is shaped into a tube or "sleeve".
The (getABI) study is a large-scale epidemiological study with a cross-sectional and longitudinal part.
This study was the longitudinal part of a case-control study investigating the aetiological factors for severe anaemia in children [6].
The longitudinal part consists of a comprehensive pulmonary rehabilitation programme in 500 tertiary care patients.
This longitudinal part of the study consists of five years prospective follow-up.
This was subsequently confirmed in the longitudinal part of the study, over 5 years [ 15].
In contrast, there were small attenuations in the longitudinal part of the model after these adjustments.
The response probability of a longitudinal two-part joint binomial/Poisson regression model can be written down as: (2) Pr y ij | x ij = π 1 g y ij ; μ ij = 0 + π 2 g y ij ; μ ij = exp x ′ ij β The first part of the equation has a mean of zero and the second part of the equation has a mean that depends on the covariates (time).
