Page 23 - Preventing pertussis in early infancy - Visser

and take care of the mother and child at their home in the first week after delivery. Focus group meetings were planned in the 1.5 hours before a planned team meeting. The home care organisation manager invited all their team members and registered the potential participants.
Midwives
One regional professional organisation of midwives invited all 35 of their midwives to participate. These community midwives work in private practices and take care of the uncomplicated births in the Netherlands, either at home or in a hospital. The midwives registered for participation by e-mailing the primary researcher, who arranged an appointment for the focus group.
Paediatric nurses
To obtain the opinions of nurses in regular close contact with infants, we chose to interview nurses working in the neonatal care unit of a Dutch university medical centre. The team managers sent invitations to 125 neonatal care nurses, who were asked to register by e-mailing the primary researcher. Since a focus group appeared impossible because there were too few reactions, we interviewed the individual participants.
Data collection
The focus group meetings and interviews lasted about 1.5 hours, and a trained moderator (OV) and a research assistant (JW or LK) conducted them. We used a semi-structured interview guide, which was based on themes derived from the available literature and a barrier framework (Cabana et al. 1999, Hofmann et al. 2006, Goins et al. 2007, Wicker et al. 2008, Hollmeyer et al. 2009, Looijmans-van den Akker et al. 2009, Cheng et al. 2010, Grol 2013). The same interview guide was used both for the focus group meetings and the interviews.
The intervi ew topics included personal, external (social and societal), and organisational factors(Grol 2013). We revised the interview guide after a pre-test. New themes that emerged during the focus group meetings and interviews were intuitively added to the interview guide by the researcher, to be evaluated in the next focus group meetings and interviews. New gatherings were planned for each group until no new concepts or themes emerged and theoretical saturation occurred.
Before enrolment, all participants had received a leaflet with information regarding the purpose of the focus group meeting or interview, the voluntariness of participation, and a short introduction to the pertussis cocooning strategy. The focus group meetings and interviews started with an introduction to the study objectives and the role of the participants during the process, where the interactive character of the meeting was emphasised. The participants were assured that everything they said would be anonymous and confidential, and we asked their consent to record the focus group meeting. Then, we introduced the key question for the focus group: ‘Why would you accept or refuse pertussis vaccination if it were offered to you in the context of a cocooning programme?’ We assured
Qualitative Study
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