To obtain the above product information, the system needs to select the specific information collection method according to the actual processing situation, thus guaranteeing the real-time, accurate, and seamless collection of the whole processing flow information.
The type of personal information collected and data collection methods typically change as the child matures.
In principle, case studies allow for a holistic in-depth investigation of issues as they happen in their natural setting, whereby different sources of information and data collection methods can be used concurrently [ 56].
Utilizing data triangulation (i.e., multiple data collection methods: information from the two focus group sessions, the background information on the participants and field notes gathered by the interviewer) and investigator triangulation (i.e., multiple researchers for analyses, background of focus group leader) strengthened the credibility of the data [ 29].
Quantitative and qualitative information was obtained using different data collection methods such as key informant interviews, focus group discussions, formal household surveys, and secondary data collection.
Validation of findings was done by triangulating information from the different data collection methods.
Collectively, recommendations were made to the recruitment process, data collection methods and participant information.
Detailed information on the sampling and data collection methods, including interview instructions and questionnaires, confidentiality and informed consent are available on the SAMHSA website (http://oas.samhsa.gov/nsduh.htm).htm
To minimize the introduction of bias, the data collection methods were triangulated, and the information collected was found to be generally consistent across the methods.
It took three months of intensive discussion around the impact and workings of the mentoring programme, trying out various data collection methods, testing the information gathered against existing theory and practice, tweaking, and finally a series of interviews with clients to get it right.
