Swiss School Cohort Study
Study profileDescription
This cohort study evaluated the effectiveness of mass SARS-CoV-2 screening in schools, utilising data from an established screening program led by the public health authorities of the canton Baselland, Switzerland, with scientific support from the University of Basel.
Countries involved: Switzerland
Sample size: 20,815 students in the school year 2020-2021, and 21,187 students in the school year 2021-2022
Related publications:
- Colosi E, Bassignana G, Barrat A, Lina B, Vanhems P, Bielicki J, Colizza V. Minimising school disruption under high incidence conditions due to the Omicron variant in France, Switzerland, Italy, in January 2022. Euro Surveill. 2023;28(5):2200192. doi:10.2807/1560-7917.ES.2023.28.5.2200192
Metadata collected
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| Data collected? | |
| Demographics | |
| Date of birth (full or MM/YY) | |
| Age at contact | ✅ |
| Sex / gender | |
| Country of birth | |
| Ethnic group / race / population sector | |
| Income level | |
| Employment / occupation | |
| Other socio-economic status proxy | |
| Education level | |
| Civil status (‘marital’) | |
| Locality (of health care provision) | |
| Locality (of residence) | ✅ |
| Household size | |
| Household composition | |
| Hospitalisation | |
| Admission / discharge dates or duration | |
| Episode dates | |
| Episode type (e.g., general; birth) | |
| Diagnosis (e.g., codes) | |
| Procedures (e.g., codes) | |
| Procedures dates | |
| Dispensed medications | |
| ICU admission | |
| Admission type (planned/emergency) | |
| Hospitalisation for COVID-19 | |
| Primary care, outpatient care | |
| Date of visit / contact | ✅ |
| Diagnosis codes | |
| Dispensed medications codes | |
| Dispensed medications date | |
| Primary care utilisation summary | |
| Health status and exposures | |
| Height | |
| Weight | |
| Date of anthropometrics | |
| Chronic / co-morbid conditions~ | |
| Medications for chronic conditions | |
| Smoker in household | |
| Current smoker | |
| ~ can include obesity | |
| Vaccines | |
| COVID-19 vaccine (timing, doses) | |
| Type of COVID-19 vaccine | |
| Other vaccinations / vaccination history | |
| COVID-19 symptoms & contacts | |
| COVID-19 episodes | ✅ |
| COVID-19 symptoms (type, severity, duration) | |
| Influenza-like symptoms (type, timing, duration) | |
| COVID-19 health-seeking behaviour | |
| COVID-19 contacts in household | |
| Medications during C-19 episode | |
| Pregnancy & birth | |
| Date of delivery | |
| Length of gestation | |
| Birthweight | |
| Maternal age at delivery | |
| Pregnancy complications | |
| Smoking pre-pregnancy | |
| Vaccines in pregnancy (non-COVID-19) | |
| Parity / nulliparity | |
| Pre-pregnancy body mass index | |
| Pregnancy outcome (e.g. miscarriage) | |
| Mode of delivery | |
| Sex of baby | |
| Congenital anomalies | |
| Other newborn complications | |
| Placental weight | |
| Antenatal care usage | |
| Currently pregnant | |
| Death | |
| Date of / age at death | |
| Cause of death | |
| COVID-19 laboratory tests | |
| Sample type tested | ✅ |
| Sample / specimen collection date | ✅ |
| SARS-CoV-2 PCR test date | ✅ |
| SARS-CoV-2 PCR pos / neg result | ✅ |
| SARS-CoV-2 PCR Ct Value | |
| SARS-CoV-2 LFT test date | |
| SARS-CoV-2 LFT test result | |
| Serology test date | |
| Serology test results | |
| SARS- COV-2 genomic test results | |
| SARS- COV-2 variant/ lineage | |
| Other lab tests | |
| COVID-19 sample collection / storage | |
| Sample type collected | |
| Sample collection date | |
| Sample collection time | |
| Sample processing | |
| Sample quality | |
| Consent to use research sample | |
| Consent to share research sample |