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Table 1 Main characteristics of the studies included in an analysis of the XRCC1 Arg194Trp polymorphism and bladder cancer risk

From: Quantitative assessment of the associations between XRCC1 polymorphisms and bladder cancer risk

Study Ethnicity Country Sample size (Frequency of T allele, %) HWE in control Quality score Genotyping method
Case no Control no
Stern [19] Caucasian US 235 (5.63) 213 (8.63) Yes 8 PCR-RFLP
Wu [20] Asian China 155 (33.87) 155 (27.42) Yes 9 PCR-RFLP
Matullo [21] Caucasian Mixed 131 (6.45) 1,094 (6.63) Yes 13 Taqman
Wu [22] Caucasian US 696 (6.43) 629 (6.42) Yes 11 Taqman
Zhang [23] Asian China 242 (33.47) 225 (26.22) No 12 PCR-RFLP
Sak [24] Caucasian UK 547 (5.79) 579 (5.96) Yes 12 Taqman
Figueroa [25] Caucasian Spain 1,150 (6.11) 1,149 (5.72) Yes 12 Taqman
Andrew [26] Caucasian US, Italy 1,029 (6.49) 1,281 (7.15) Yes 12 Taqman
Hsu [27] Asian Taiwan 221 (34.86) 223 (33.26) No 7 PCR-RFLP
Fontana [28] Caucasian France 51 (3.92) 45 (5.56) Yes 6 Taqman
Narter [29] Caucasian Turkey 83 (21.93) 45 (23.61) Yes 4 PCR-RFLP
Wang [30] Asian China 234 (31.62) 253 (23.72) Yes 8 PCR-RFLP
Bianchino [31] Caucasian Italy 32 (12.50) 242 (7.02) Yes 5 PCR-RFLP
Mittal [32] Asian India 212 (10.14) 250 (9.00) Yes 10 PCR-RFLP
  1. HWE, Hardy–Weinberg equilibrium.