a general conceptual scheme- which included hypotheses about awareness, expectedness and rate of dying- as well as by a developing conceptual structure including matters not at first envisioned. Sometimes we returned to services after the initial two or three or four weeks of continuous observation, in order to check upon items which needed checking or had been missed in the initial period." See also Axial coding Grounded theory Sampling (statistics) Sampling (case studies) References Charles C. Ragin, 'Constructing Social Research: The Unity and Diversity of Method', Pine Forge Press, 1994, Barney G. Glaser & Anselm L. Strauss, 'The Discovery of Grounded Theory: Strategies for Qualitative Research', Chicago, Aldine Publishing Company, 1967, Breckenridge, J. & Jones, D. (2009). 'Demystifying Theoretical Sampling in Grounded Theory research' N.A. Coyne, I. T. (1997). 'Purposeful and theoretical sampling:merging or clear boundaries? Journal of Advanced Nursing', 623–630. Glaser, B. & Strauss, A. (1967) 'The Discovery of Grounded Theory: Strategies for Qualitative Research' N.A: Aldine Transaction. Glaser, B. & Strauss, A. (1967) 'The Discovery of Grounded Theory: Strategies for Qualitative Research' Aldine Transactions. Oppong, S. (2013). 'The problem of sampling in qualitative research. Asian Journal of Management sciences and Education 2', N.A. Silverman, D. &Marvasti, A.(2008). 'Doing Qualitative Research- A comprehensive Guide'. New Delhi: Sage Publications. Sociological terminology