Peer-reviewed: This work was reviewed and scrutinised by relevant independent experts. Systematic review: This type of study is a structured approach to reviewing all the evidence to answer a specific ...

Peer-reviewed: This work was reviewed and scrutinised by relevant independent experts. Survey: A study based solely on people’s responses to a series of questions. People: This is a study based on ...

Not peer-reviewed: This work has not been scrutinised by independent experts, or the story does not contain research data to review (for example an opinion piece). If you are reporting on research ...

Not peer-reviewed: This work has not been scrutinised by independent experts, or the story does not contain research data to review (for example an opinion piece). If you are reporting on research ...

Peer-reviewed: This work was reviewed and scrutinised by relevant independent experts. Case study: A study involving observations of a single patient or group of patients. People: This is a study ...

Peer-reviewed: This work was reviewed and scrutinised by relevant independent experts. Survey: A study based solely on people’s responses to a series of questions. People: This is a study based on ...

Peer-reviewed: This work was reviewed and scrutinised by relevant independent experts. Meta-analysis: This type of study involves using statistics to combine the data from multiple previous studies to ...

Peer-reviewed: This work was reviewed and scrutinised by relevant independent experts. Survey: A study based solely on people’s responses to a series of questions. People: This is a study based on ...

Peer-reviewed: This work was reviewed and scrutinised by relevant independent experts. Literature review: This type of work involves summarising the literature that has previously been published on a ...

Peer-reviewed: This work was reviewed and scrutinised by relevant independent experts. Female bonobos tend to have more power in their communities than females in most social mammal species, and ...

Peer-reviewed: This work was reviewed and scrutinised by relevant independent experts. Observational study: A study in which the subject is observed to see if there is a relationship between two or ...

Peer-reviewed: This work was reviewed and scrutinised by relevant independent experts. Men fall in love slightly more often than women, but women obsess about their partner more than men, according to ...