Table 1 Characteristics of studies included in the meta-analysis
First author [reference] | Country | Ethnicity | Genotyping method | Cases (age) | Controls (age) | Design of experiment |
|---|---|---|---|---|---|---|
Kim (2005) [19] | Korea | Asian | PCR-RFLP | N = 153 (62.9 ± 10.8 yrs) | N = 153 (60.7 ± 11.8 yrs) | Hospital-based |
Karahalil (2006) [23] | Turkey | Caucasian | PCR-RFLP | N = 100 (mean age 60.2 yrs) | N = 100 (age, sex matched controls) | Hospital-based |
Huang (2007) [21] | USA | Caucasian | Taqman | N = 696 (63.9 ± 11.1 yrs) | N = 629 (age, sex matched controls) | Hospital-based |
Figueroa (2007) [20] | Spain | Caucasian | Taqman | N = 1150 (66 ± 10 yrs) | N = 1149 (65 ± 10 yrs) | Hospital-based |
Arizono (2008) [17] | Japan | Asian | PCR-RFLP | N = 251 (68.2 ± 11.2 yrs) | N = 251 (age-matched healthy controls) | Population-based |
Narter (2009) [22] | Turkey | Caucasian | PCR-RFLP | N = 83 (63.4 ± 11.7 yrs) | N = 45 (59.9 ± 9.71 yrs) | Hospital-based |
Mittal (2011) [31] | India | Asian | ARMS-PCR | N = 212 (58.5 ± 12.4 yrs) | N = 250 (56.8 ± 10.8 yrs) | Hospital-based |