Table 6. Prevalence and incidence of AIH.

	Year	Region	Cases (no)	Prevalence period	Prevalence/100,000	Incidence period	Annual incidence/100,000	Diagnostic method
Boberg KM et al.[1]	1998	Norway (Oslo)	25	1995	16.9	1986–1995	1.9	Original criteria[16]
Lee YM et al.[2]	2001	Singapore	24 (11 definite/13 probable)	1990–1996	4	NA	NA	Original criteria
Hurlburt KJ et al.[3]	2002	Alaska natives	49 (42 definite/7 probable)	1983–2000	42.9	NA	NA	Revised criteria
Koay LB et al.[12]	2006	Taiwan	48 (29 definite/19 probable)	NA	NA	2000–2004	0.52	Revised criteria
Wally S et al.[13]	2007	England (West Suffolk)	6	NA	NA	2003–2004	3	Clinical diagnosis
Werner M et al.[4]	2008	Sweden	110	2003	10.7	1990–2003	0.85	Clinical diagnosis
Primo J et al.[14]	2009	Spain (Valencia)	19	NA	NA	2003	1.07	Revised criteria
Jalihal A et al.[5]	2009	Brunei	19	2008	5.6	NA	NA	Revised criteria
Ngu JH et al.[6]	2010	New Zealand (Canterbury)	138 (123 definite/ 15 probable)	2008	24.5 (Age-standardized 18.9)	2008	2.0 (Age-standardized1.7)	Revised/simplified criteria
Haider AS et al.[7]	2010	Australia (Canberra)	42	Unknown	8	NA	NA	Revised criteria
Delgado JS et al.[8]	2013	Israel	100 (73 definite/27 probable)	1995–2010	11.0	1995–2010	0.67	Simplified criteria
van Gerven et al.[9]	2014	Netherland (Amsterdam)	146	1967–2011	18.3	2000–2010	1.1	Revised/simplified criteria
Gronbaek L et al.[10]	2014	Denmark	1,721	2012	23.9	1994–2012	1.68	Clinical diagnosis
Yoshizawa K et al.[11]	2016	Japan (Ueda)	48	2014	23.4	2004–2014	2.23	Revised criteria
Kim et al	2017	Korea	4,085	2009–2013	4.8	2011–2013	1.1	Clinical diagnosis