TRAILS - Tracking the next generation

TRAILS - Tracking the next generation - TRAILS-Next

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

NL-OMON

Registry ID

NL-OMON40990

Enrollment

450

Registered

2014-09-22

Start date

2015-03-31

Completion date

Unknown

Last updated

2025-09-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

n.v.t.

Interventions

None listed

Eligibility

Age

No minimum to 64 Years

Inclusion criteria

Inclusion criteria: All TRAILS and TRAILS-CC participants, who are parent or are to become a parent in the next ten years, except those who dropped out of the study. In addition the babies or young children of these parents will be included. In the ROAD cohort, at least one of the parents has ADHD and they are either pregnant or anticipating to become pregnant.

Exclusion criteria

Exclusion criteria: No participation in TRAILS

Design outcomes

Primary

Measure	Time frame
The TRAILS study is an extensive database on the basis of which different researchers answer different scientific questions, rather than a study with primary and secondary outcome measures. We had to make choices, and the focus is on measuring personality/temperament in both parents and child, additional early cognitive development in the child (previously also done in parents when they were 11 and 18 years old) and environmental proxies, i.e. parenting / parent-child relationships on the one hand and other important aspects of the environment (such as SES and serious life events) on the other hand. In the research protocol we have given global examples of the type of research questions that can be answered in TRAILS - Tracking the Next Generation. However, for each study carried out in TRAILS there are primary and secondary outcome measures that are specified in advance, per research question, in a publication plan. Studies are only carried out after a positive assessment of this publication plan (based on the quality of the research question and its elaboration, and the feasibility of answering the question in TRAILS) by the TRAILS management team. Researchers thus commit themselves to answer all the questions included in their publication plan, regardless of whether the association(s) found are significant or not. These procedures that need to be followed for all studies conducted in TRAILS are established to guarantee the quality of the research in TRAILS and to prevent "fishing" in the data as well as publication of only positive (i.e. statistically significant) findings. Therefore, although it is clear per research question which variable is the primary outcome measure, and whether there are any secondary outcome variables, the multitude of research questions in TRAILS makes it impossible to answer this question about primary and secondary research variables in general. This is the background on the basis of which we filled in N/A (jus	—

Measure

Time frame

The TRAILS study is an extensive database on the basis of which different researchers answer different scientific questions, rather than a study with primary and secondary outcome measures. We had to make choices, and the focus is on measuring personality/temperament in both parents and child, additional early cognitive development in the child (previously also done in parents when they were 11 and 18 years old) and environmental proxies, i.e. parenting / parent-child relationships on the one hand and other important aspects of the environment (such as SES and serious life events) on the other hand. In the research protocol we have given global examples of the type of research questions that can be answered in TRAILS - Tracking the Next Generation. However, for each study carried out in TRAILS there are primary and secondary outcome measures that are specified in advance, per research question, in a publication plan. Studies are only carried out after a positive assessment of this publication plan (based on the quality of the research question and its elaboration, and the feasibility of answering the question in TRAILS) by the TRAILS management team. Researchers thus commit themselves to answer all the questions included in their publication plan, regardless of whether the association(s) found are significant or not. These procedures that need to be followed for all studies conducted in TRAILS are established to guarantee the quality of the research in TRAILS and to prevent "fishing" in the data as well as publication of only positive (i.e. statistically significant) findings. Therefore, although it is clear per research question which variable is the primary outcome measure, and whether there are any secondary outcome variables, the multitude of research questions in TRAILS makes it impossible to answer this question about primary and secondary research variables in general. This is the background on the basis of which we filled in N/A (jus

—

Secondary

Measure	Time frame
N/A, see text under primary research variables/outcome measures.	—

Countries

Netherlands

Outcome results