Latitudinal differences on the global epidemiology of infantile spasms: systematic review and meta-analysis

Jia, Jason L.; Chen, Shiyi; Sivarajah, Vishalini; Stephens, Derek; Cortez, Miguel A.

doi:10.1186/s13023-018-0952-x

Orphanet Journal of Rare Diseases

Table 1 Summary of studies reporting the incidence and/or prevalence of IS

From: Latitudinal differences on the global epidemiology of infantile spasms: systematic review and meta-analysis

	INC or PRV	Date	Country	Latitude (^oN)	Cases	Event Rate	Age-Adjusted
Bobo et al. (1994) [15]	INC	1987–1988	U.S.A.	45.55	11	0.100
Braathen & Theorell (1995) [16]	INC	1990–1992	Sweden	59.24	1	0.096
Brna et al. (2001) [17]	INC	1978–1998	Canada	46.34	75	0.307
Camfield et al. (1996) [18]	INC	1977–1985	Canada	44.68	32	0.323
Chen et al. (2004) [19]	INC	1985–1997	Taiwan	25.03	2	0.060
Cortez et al. (1997) [20]	INC	1984–1993	Canada	43.65	76	0.056
Doerfer & Wasser (1987) [21]	INC	1982–1985	Germany	48.55	3	0.570
Doose & Sitepu (1982) [22]	INC	1957–1966	Germany	54.32	18	0.478
Dura-Trave et al. (2008) [23]	INC	2002–2005	Spain	42.70	10	0.301
Eltze et al. (2013) [24]	INC	2005–2006	U.K.	51.51	16	0.300
Freitag et al. (2001) [25]	INC	1999–2000	Germany	49.45	0	0.000
Heijbel et al. (1975) [26]	INC	1973–1974	Sweden	65.33	1	0.317
Hino-Fukuyo et al. (2009) [27]	INC	2000–2005	Japan	38.27	45	0.420
Howitz & Platz (1978) [28]	INC	1976–1977	Denmark	56.26	21	0.322
Hwang (2001) [29]	INC	1997–2000	South Korea	35.91	324	0.168
Joensen (1986) [30]	INC	1970–1980	Denmark	61.89	4	0.467
Lee & Ong (2001) [31]	INC	1998–1999	Singapore	1.35	9	0.310
Loiseau et al. (1990) [32]	INC	1984–1985	France	44.85	8	0.535
Lommi et al. (2010) [33]	INC	1997–2006	Finland	60.17	48	0.376
Ludvigsson et al. (1994) [34]	INC	1981–1990	Iceland	64.96	13	0.302
Matsuo et al. (2001) [35]	INC	1989–1998	Japan	32.74	47	0.310
Olafsson et al. (2005) [36]	INC	1995–1999	Iceland	64.96	6	0.474
Primec et al. (2002) [37]	INC	1985–1995	Slovenia	46.15	47	0.206
Rantala & Putkonen (1999) [38]	INC	1976–1993	Finland	65.01	37	0.410
Riikonen (1995) [39]	INC	1960–1991	Finland	60.22	209	0.425
Saemundsen et al. (2007) [40]	INC	1981–1998	Iceland	64.96	25	0.338
Sarsenbayeva et al. (2015) [41]	INC	2013–2014	Kazakhstan	48.02	60	0.154
Schmitt et al. (1996) [42]	INC	1991–1991	Germany	51.26	4	0.180
Shields et al. (1988) [43]	INC	1967, 1972	Denmark	56.26	80	0.513
Sidenvall & Eeg-Olofsson (1995) [44]	INC	1987–1991	Sweden	61.38	57	0.450
Trevathan et al. (1999) [45]	INC	1975–1977	U.S.A.	33.75	20	0.290
Tsuboi (1988) [46]	INC	1974–1980	Japan	35.67	3	0.175
Van Den Berg et al. (1969) [47]	INC	1960–1968	U.S.A.	37.80	3	0.162
Vardi et al. (2005) [48]	INC	1981–1997	Israel	32.02	31	0.220
Verity et al. (1992) [49]	INC	1970–1980	U.K.	55.38	3	0.187
Wendt et al. (1985) [50]	INC	1966–1966	Finland	66.47	7	0.581
Wirrell et al. (2011) [51]	INC	1980–2004	U.S.A.	44.00	9	0.198
Young (2001) [52]	INC	1998–1999	Taiwan	23.70	41	0.074
Zarrelli et al. (1999) [53]	INC	1980–1984	U.S.A.	44.01	0	0.000
Beilmann et al. (1999) [54]	PRV	1997	Estonia	58.38	8	0.0138	0.0139
Bobo et al. (1994) [15]	PRV	1988	U.S.A.	45.55	21	0.0028	0.0028
Chen et al. (2004) [19]	PRV	1997	Taiwan	25.03	142	0.0065	0.0065
Cowan et al. (1989) [55]	PRV	1983	U.S.A.	35.01	23	0.0327	0.0328
Dura-Trave et al. (2012) [56]	PRV	2009	Spain	42.70	24	0.0396	0.0397
Endziniene et al. (1997) [57]	PRV	1995	Lithuania	54.90	3	0.0072	0.0066
Eriksson & Koivikko (1997) [58]	PRV	1992	Finland	61.50	25	0.0578	0.0580
Granieri et al. (1983) [59]	PRV	1978	Italy	44.89	1	0.0221	0.0222
Ishida (1985) [60]	PRV	1975	Japan	34.66	41	0.0225	0.0226
Joensen (1986) [30]	PRV	1980	Denmark	61.89	4	0.0917	0.0917
Koul et al. (1988) [61]	PRV	1986	India	33.70	4	0.0628	0.0628
Kurth et al. (2010) [62]	PRV	2006	U.S.A.	37.09	59	0.0042	0.0009
Kwong et al. (2001) [63]	PRV	1997	China	22.41	16	0.0142	0.0143
Larsson & Olofsson (2006) [64]	PRV	2000	Sweden	59.86	4	0.0135	0.0136
Maremmani et al. (1991) [65]	PRV	1985	Italy	43.78	0	0.0000	0.0000
Oka et al. (2001) [66]	PRV	1994	Japan	34.66	6	0.0031	0.0031
Olafsson & Hauser (1999) [67]	PRV	1993	Iceland	64.96	2	0.0223	0.0223
Sidenvall et al. (1996) [68]	PRV	1985	Sweden	65.33	3	0.0180	0.0181

39 incidence (INC) and 18 prevalence (PRV) data points were abstracted from 54 studies [15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68]. For incidence studies, date refers to the period of observation and event rate is the number of new cases per 1000 live births. For prevalence studies, date refers to the prevalence point, event rate is the age-specific prevalence, and age-adjustment lists the age-standardized figure per 1000 population

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ISSN: 1750-1172

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