National Brain Health Platform
College Student Cohort Data Catalogue.
A structured English-language catalogue of standardized instruments and thematic questionnaire modules used in the college student cohort. The catalogue is organized by scientific construct rather than by raw spreadsheet columns, allowing collaborators to understand what was measured, when it was measured, and how variables can be interpreted.
Assessment timeline
Open each collection period to understand what the data represent.
Collection periods are kept distinct whenever sampling, questionnaire content, linkage certainty, or deep-phenotyping availability differs.
BaselineUniversity-entry assessmentOpen
Newly enrolled college students.
32,296 participants in the current public cohort summary.
Demographics, family socioeconomic circumstances, pre-university context, academic transition, social resources, lifestyle, sleep, mental health, pain, and somatic health.
Study identifiers support governed linkage to subsequent follow-up waves.
Selected participants contribute SCID, neuroimaging, activity monitoring, sleep physiology, EEG, and biospecimen data.
Follow-up 1Student adaptation and health outcomesOpen
Students previously enrolled at baseline.
10,113 respondents in the current public summary.
Repeated core outcomes plus updated academic experience, living conditions, social support, behaviours, developmental residential history, and emerging psychosocial topics.
Longitudinal linkage is available within the governed research dataset; analysis-specific denominators must be reported.
Deep-phenotyping linkage is available for selected subsamples.
Annual programmeNew recruitment and repeated follow-upOpen
New university entrants and previously enrolled participants.
The programme is expected to add more than 10,000 new participants and more than 10,000 participants in each active follow-up wave during the next cycle.
A stable longitudinal core is retained while selected modules are updated to address new educational, social, digital, and mental-health concerns.
Linkage follows cohort identifiers and wave-specific quality-control rules.
Additional mechanistic and multimodal assessments can be nested within survey waves.
Instrument and module catalogue
Browse standardized scales and distinctive thematic modules.
Standard instruments and context-specific modules are presented at the same level. This makes family economics, parental migration, bullying, AI use, and educational context visible alongside depression and anxiety scales.
This public catalogue describes questionnaire content and data structure. Item-level wording, response counts, derived-score code, and wave-specific codebooks remain part of the governed research documentation.
Measurement domain
Population and socioeconomic context
3 instruments or thematic modulesPopulation and socioeconomic contextDemographic and anthropometric profile View details
Age, sex, ethnicity, student status, relationship status, height, weight, and body mass index.
College students
Baseline and follow-up
Multiple single-item variables
Categorical responses and numeric measurements
Descriptive variables; BMI can be derived from measured or reported height and weight.
Available in baseline; selected variables updated at follow-up.
Academic programme, residential setting, lifestyle, mental health, and physical health.
Population and socioeconomic contextFamily socioeconomic circumstances View details
Household income, personal expenditure, parental education, parental occupation, sibling structure, parental marital status, and perceived family circumstances.
College students
Baseline and follow-up
Multiple questionnaire items
Ordered categories, occupational groups, and household composition variables
Variables can be analysed separately or combined into a prespecified socioeconomic index.
Core measures available; income and expenditure are updated at follow-up.
Pre-university residential history, academic adjustment, social support, depression, anxiety, and sleep.
Population and socioeconomic contextChildhood residential history and parental migration View details
Residential locations across childhood educational stages and prolonged parental employment away from home before age 18.
College students
Baseline, expanded at follow-up
Stage-specific locations plus parental migration duration
Province/city/county fields and categorical duration responses
Derived indicators may include rural-urban background, geographic mobility, left-behind childhood experience, and duration of parental absence.
Detailed developmental residential history is most complete in the follow-up questionnaire.
Family relationships, socioeconomic circumstances, social support, resilience, and mental health.
Measurement domain
Education and social environment
3 instruments or thematic modulesEducation and social environmentUniversity transition and academic experience View details
Academic discipline, campus residence, satisfaction with major and studies, class ranking, peer relationships, teacher relationships, and university adjustment.
College students
Baseline and follow-up
Multiple single-item and rating-scale measures
Categorical responses, percentile bands, and 0-10 ratings
Variables are generally retained separately; composite adjustment scores require prespecification.
Available across waves with follow-up updates for the previous academic year.
Educational stress, school belonging, social support, sleep, depression, and anxiety.
Education and social environmentSocial Support Rating Scale View details
Objective support, perceived support, available support sources, help-seeking, and use of social resources.
College students
Baseline and follow-up
10 items
Mixed categorical and multiple-response formats
Subscale and total scores can be derived according to the Chinese Social Support Rating Scale manual.
Repeated measure in the longitudinal questionnaire system.
Family relationships, peer support, resilience, stress, depression, anxiety, and help-seeking.
Education and social environmentCampus climate and belonging View details
Perceived fairness, interpersonal support, school-life experience, social integration, and sense of belonging.
College students
Baseline and follow-up
Multi-item thematic modules
Likert-type agreement or frequency scales
Module-specific totals or domain scores after psychometric verification.
Core school-environment content is retained; selected items may be updated between waves.
Academic satisfaction, peer relationships, social support, resilience, and mental health.
Measurement domain
Lifestyle and digital behaviour
4 instruments or thematic modulesLifestyle and digital behaviourTobacco, e-cigarette, and alcohol use View details
Current and previous smoking, e-cigarette exposure, drinking frequency, quantity, and duration.
College students
Baseline and follow-up
Multiple branching items
Categorical frequency, quantity, duration, and age-at-initiation responses
Current-use and exposure-history indicators; higher-risk patterns can be defined prospectively.
Available across waves; e-cigarette content is included in the updated baseline version.
Sleep, physical activity, mental health, pain, and other health behaviours.
Lifestyle and digital behaviourPhysical activity and sedentary behaviour View details
Activity intensity, duration, frequency, walking, strength exercise, sitting time, recreational screen time, and participation in sports groups.
College students
Baseline and follow-up
Activity questionnaire plus detailed sedentary-behaviour items
Days/week, minutes/day, intensity categories, and participation indicators
Activity volume and sedentary-time variables can be derived; algorithm selection should be documented in the analysis protocol.
Available in the survey; objective one-week activity monitoring is available in selected deep-phenotyping subsamples.
Actigraphy, sleep timing, BMI, mood, pain, and academic functioning.
Lifestyle and digital behaviourDietary timing and eating habits View details
Breakfast frequency, meal timing, last eating time, and food-frequency indicators.
College students
Baseline and follow-up
Multiple dietary habit and timing items
Frequency categories and clock-time categories
Individual behaviours or prespecified diet-timing profiles.
Available across questionnaire waves with content refinement.
Sleep timing, BMI, gastrointestinal symptoms, mood, and daily routine.
Lifestyle and digital behaviourInternet use and problematic digital behaviour View details
Screen exposure, bedtime phone use, post-midnight use, online activity types, loss of control, and functional interference.
College students
Baseline and follow-up
Screen-time items and Internet Addiction Test content
Time categories and Likert-type frequency responses
Screen-time variables and instrument-based problematic-use scores.
Repeated core content; follow-up modules can respond to emerging digital practices.
Sleep, academic performance, loneliness, depression, anxiety, and AI-related attitudes.
Measurement domain
Sleep and circadian health
4 instruments or thematic modulesSleep and circadian healthMunich Chronotype Questionnaire View details
Sleep timing on study/work days and free days, sleep latency, wake time, alarm-clock use, and napping.
College students
Baseline and follow-up
Timing sequence for work/study days and free days
Clock times, minutes, days/week, and yes/no responses
Sleep duration, midpoint of sleep, social jetlag, and chronotype-related variables.
Repeated measure across questionnaire waves.
PSQI, insomnia, daytime sleepiness, actigraphy, mood, and digital behaviour.
Sleep and circadian healthPittsburgh Sleep Quality Index View details
Subjective sleep quality, latency, duration, efficiency, disturbances, medication use, and daytime dysfunction.
College students
Baseline and follow-up
19 self-rated items
Clock times, durations, and 0-3 frequency/severity categories
Seven component scores and a global score using the standard PSQI algorithm.
Repeated core sleep measure.
Chronotype, insomnia, daytime sleepiness, depression, anxiety, pain, and PSG.
Sleep and circadian healthInsomnia Severity Index View details
Insomnia severity, sleep satisfaction, daytime interference, noticeability, and distress.
College students
Baseline and follow-up
7 items
Five-point severity ratings
Total score 0-28 using the standard ISI algorithm.
Available across waves.
PSQI, chronotype, daytime sleepiness, mood, actigraphy, and PSG.
Sleep and circadian healthEpworth Sleepiness Scale View details
Likelihood of dozing in common daytime situations.
College students
Baseline and follow-up
8 items
Four-point likelihood ratings
Total score 0-24 using the standard ESS method.
Available across waves.
Sleep duration, insomnia, PSQI, actigraphy, PSG, and academic functioning.
Measurement domain
Mental health and psychological resources
4 instruments or thematic modulesMental health and psychological resourcesPatient Health Questionnaire-9 View details
Depressive symptoms and associated functional difficulty during the previous two weeks.
College students
Baseline and follow-up
9 symptom items plus functional-impact item where administered
0-3 frequency scale
Symptom total 0-27; thresholds and item-level interpretation should follow the prespecified protocol.
Repeated core mental health outcome.
GAD-7, sleep, pain, social support, resilience, self-harm, and clinical interviews.
Mental health and psychological resourcesGeneralized Anxiety Disorder-7 View details
Anxiety symptoms during the previous two weeks.
College students
Baseline and follow-up
7 items
0-3 frequency scale
Total score 0-21 using the standard GAD-7 algorithm.
Repeated core mental health outcome.
PHQ-9, stress, sleep, pain, social support, resilience, and clinical interviews.
Mental health and psychological resourcesSelf-harm and suicide-related assessment View details
Non-suicidal self-injury, frequency, methods, medical severity, and suicide-related responses collected through questionnaire branching.
College students
Baseline and follow-up
Branching module; item count depends on responses
Yes/no, frequency, timing, method, and severity categories
Event indicators and frequency/severity variables; branching rules must be documented in every analysis.
Available with wave-specific skip logic.
PHQ-9 item 9, depression, anxiety, pain, social support, resilience, and clinical interviews.
Mental health and psychological resourcesResilience and emotion regulation View details
Ability to recover from stress, cognitive emotion-regulation strategies, positive psychological capital, and coping resources.
College students
Baseline and follow-up
Brief Resilience Scale and complementary multi-item modules
Likert-type agreement or frequency scales
Instrument-specific mean, total, or subscale scores.
Available across waves; module composition may vary.
Social support, campus climate, academic stress, depression, anxiety, and recovery trajectories.
Measurement domain
Pain, somatic health, and quality of life
3 instruments or thematic modulesPain, somatic health, and quality of lifePain occurrence, severity, and interference View details
Recurrent or persistent pain, duration, frequency, anatomical location, intensity, treatment, and interference with daily functioning.
College students
Baseline and follow-up
Branching pain module adapted from the Brief Pain Inventory
Yes/no, duration categories, body locations, 0-10 ratings, and treatment descriptions
Pain presence, number of sites, severity indices, and interference indices.
Repeated secondary outcome and somatic-distress measure.
PHQ-15, sleep, depression, anxiety, physical activity, gastrointestinal symptoms, and health anxiety.
Pain, somatic health, and quality of lifeSomatic symptoms and health anxiety View details
Common physical symptoms, symptom-related concern, functional interference, and illness-related interpretation.
College students
Baseline and follow-up
PHQ-15 content plus health-anxiety and somatic-concern modules
Severity/frequency categories and Likert-type agreement scales
Instrument-specific totals and symptom-domain indicators.
Available across waves.
Pain, gastrointestinal symptoms, sleep, depression, anxiety, healthcare use, and quality of life.
Pain, somatic health, and quality of lifeHealth-related quality of life View details
Mobility, self-care, usual activities, pain/discomfort, anxiety/depression, and self-rated health.
College students
Baseline and follow-up
EQ-5D-5L descriptive system plus visual analogue scale where administered
Five severity levels and 0-100 health rating
Health-state profiles, index values using an appropriate value set, and visual analogue score.
Available in the questionnaire framework.
Mental health, pain, somatic symptoms, sleep, and functional impairment.
Measurement domain
Emerging social and technological topics
1 instruments or thematic modulesEmerging social and technological topicsDigital mental health and AI acceptability View details
Experience with and willingness to use apps, online platforms, wearables, immersive technologies, and large-language-model-based support.
College students
Baseline and follow-up; expandable module
Multi-item technology and service-acceptability module
Previous-use indicators, willingness ratings, and preferred-use contexts
Item-level indicators or empirically validated acceptability dimensions.
Available and designed for refinement as technology and social concerns evolve.
Digital behaviour, help-seeking, service access, mental health, privacy attitudes, and intervention studies.