Table 4 Risk of bias qualitative studies using the CASP tool for qualitative studies

Study ID

O’Brien et al. [31]

Study objective

Yes, understanding the women’s experiences of attending and being referred to the specialist antenatal clinic.

Appropriate method

Yes, qualitative methodology is appropriate to seek women’s experience of the clinic.

Study design

Yes, through focus groups and in depth face to face interviews.

Recruitment strategy

Yes, women were enrolled from a specialist clinic which is a major referral centre in the North West England.

Data collection

Yes, data collected through focus groups and face to face interview. All were recorded and transcribed and data saturation was discussed.

Researcher-participant relationship

Unclear, no information was given.

Ethical approval

Yes, study reviewed by Hospital’s Research and development Committee.

Data analysis

Yes, data was analysed by two independent researchers using the constant comparative method.

Study findings

Yes, three themes were explicitly defined and the credibility of the findings was also clearly discussed.

Study values

Yes, researchers identify a new area for further research.