6 27–29 However, a recent mixed-methods study has brought clarity to the issue.
The mixed-methods study has two components: First, a longitudinal study using quantitative measures of primary caregivers' and matched comparisons' general health, emotional distress, and quality of life pre-and post-bereavement, in order to determine the changes over time, and how the recently bereaved caregivers' distress compares with the matched comparisons.
A mixed method study has been carried out with professionals from the 36 NGOs that work with HIV/AIDS in Catalonia, as well as their users.
This ongoing mixed-methods study has used epidemiological and anthropological methods to explore outcomes and experiences of pregnancy in African women living with HIV in the UK.
The iterative research process of interpretation and review in a mixed-methods study has been highly relevant; in particular, stakeholder interviews and strong user involvement were important.
In addition to single methods, studies have combined different methods to generate more accurate results and confirmed that combining different models enhances forecasting accuracy and accounts for the unique features of individual models.
Studies using stated preference methods studies have found that consumers may be inclined to spend more while shopping in districts that have quality tree canopies (Wolf 2014).
The characteristics of mixed methods studies have been described in terms of the purpose of combining methods, the priority of methods within a study, and the sequence in which methods are used [ 29], with purposes including complementarity, confirmation, development [ 30].
As well as contributing to qualitative systematic reviews, there are examples of how mixed methods studies have been included in more traditional 'quantitative' reviews and in mixed methods reviews that aim to answer multiple questions.
The level of evidence is quite low and few large-scale mixed-methods studies have been undertaken.
