Table 1.
Study characteristics
| Study\author, reference number, and year | Study design | Prevalence year or period | Incidence period |
Study region | Case ascertainment | Included ages |
Included CIDP categories | Population number |
Person-years |
|---|---|---|---|---|---|---|---|---|---|
| Lefter et al. [36], 2017 | Retrospective and prospective | December 31, 2013 | NA | Republic of Ireland | EFNS/PNS 2010 criteria | ≥18 years | NR | 3,439,565 | NA |
| Hafsteinsdottir and Olafsson [32], 2016 | NR | NA | January 1, 1991 – December 31, 2011 | Iceland | EFNS/PNS 2010 criteria | All ages | Definite and probable | 284,082 | 5,996,021* |
| Mahdi-Rogers and Hughes [9], 2014 | NR | January 1, 2008 | NA | Southeast England |
EFNS/PNS 2006 criteria | NR | Definite, probable and possible | 3,557,352 | NA |
| Rajabally et al. [18], 2009 | NR | May 1, 2008 | 2005–2007 | UK, Leicestershire, Rutland |
EFNS/PNS 2006 criteria, AAN criteria | All ages | Definite, probable and possible | 963,600 | 2,857,143† |
| Laughlin et al. [33], 2009 | NR | January 1, 2000 | January 1, 1982 – December 31, 2001 | USA, Olmsted County |
Dyck et al. [62], 1975 | All ages | Definite, probable |
NR | NR |
| Iijima et al. [34], 2008 | NR | September 2004 – August 2005 | September 2004 – August 2005 | Japan | AAN criteria, Saperstein's modified criteria, INCAT, other criteria | All ages | NA | 127,655,000 | 127,655,000† |
| Ohiò et al. [11], 2007 | NR | December 31, 2001 | 1995–2001 | Italy, Piemonte and Valle d'Aosta |
AAN criteria | All ages | Definite, probable and possible | 4,334,225 | 26,005,350* |
| Mygland and Monstad [10], 2001 | Prospective | October 31, 1999 | NA | Norway, Vest-Agder |
Albers and Kelly criteria | All ages | NA | 155,464 | NA |
| McLeod et al. [13], 1999 | NR | August 6, 1996 | 1986–1995 | Australia, New South Wales |
AAN criteria, Dyck et al. [61], 1993 | All ages | Definite, probable and possible | 5,995,544 | 58,000,000 |
| Lunn et al. [12], 1999 | NR | January 1, 1995 | NA | England, Four Thames health regions |
AAN criteria | NR | Definite, probable and possible | 14,049,850 | NA |
| Kusumi et al. [35], 1995 | Retrospective | December 31, 1992 | NA | Japan, Tottori prefecture |
AAN criteria | NR | NR | 614,725* | NA |
Case definition: Albers and Kelly [60]; AAN criteria, American Academy of Neurology criteria [6]; Dyck et al. [61], 1993; Dyck et al. [62], 1975; EFNS/PNS 2006 criteria [49]; EFNS/PNS 2010 criteria [4]; INCAT, inflammatory neuropathy cause and treatment [5]; Saperstein>s modified criteria [63]; other criteria [64].
†
Calculated,
*
provided by author of corresponding study. NA, not applicable