Study characteristics
| Study design | Study period | Population characteristics (age and gender) | Patients with myeloma (total) | Outcome measure (interval) |
| Friese et al (USA)8 | ||||
| Retrospective analysis | 1992–2002 | Mean age 76.3 years 46% males | 3831 | Diagnostic |
| Howell et al (UK)31 | ||||
| Survey | 2004–2011 | Median age 69.9 years 66.9% males | 341 | Patient diagnostic Time to diagnosis |
| Lyratzopoulos et al (UK)26 | ||||
| Audit data | 2009–2010 | Not reported | 176 | Primary care |
| Varga et al (Hungary)29 | ||||
| Retrospective analysis | Not reported | Median age 60 years 50% males | 193 | Diagnostic |
| Neal et al (UK)25 | ||||
| Retrospective analysis | 2001–2002 | Mean age 72 years 53% males | 221 | Diagnostic |
| Din et al (UK)24 | ||||
| Retrospective analysis | 2007–2010 | Median age 72 years 56% males | 500 | Diagnostic |
| Lyratzopoulos et al (UK)27 | ||||
| Audit data | 2009–2010 | Not reported | 124 | Patient |
| Goldschmidt et al (Israel)30 | ||||
| Retrospective analysis | 2002–2011 | Median age 63 years 53% males | 107* | Diagnostic |
| Swann et al (UK)28 | ||||
| Audit data | 2014 | Not reported | 202 | Primary diagnostic |
↵*The total sample size for this study was 110 patients out of which seven were diagnosed with plasmacytoma. The analysis was conducted on 107 patients that had complete data.