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Table 1 Main characteristics of studies included in the meta-analysis

From: P53 codon 72 polymorphism, human papillomavirus infection, and their interaction to oral carcinoma susceptibility

Study Country Ethnicity Control source Genotyping Methods Sample size (case/control)
Patel KR et al. [28] India Asian healthy PCR-RFLP 79/110
Wang Z et al. [18] USA Caucasian healthy PCR-RFLP 320/321
Ji X et al. [19] USA Caucasian healthy PCR-RFLP 188/342
Kuroda Y et al. [29] Japanese Asian Hospital PCR-RFLP 100/271
Kitkumthorn N et al. [30] Thailand Asian healthy PCR-RFLP 78/94
Chen X et al. [31] USA Caucasian healthy PCR-RFLP 326/349
Zemleduch T et al. [32] Caucasian Caucasian healthy PCR-RFLP 123/300
Ihsan R et al. [33] India Asian healthy PCR-RFLP 116/278
Tu HF et al. [34] Taiwan Asian healthy DNA sequence 189/116
Summersgill KF et al. [20] USA Caucasian Hospital PCR-CTPP 190/308
Misra C et al. [35] India Asian Hospital PCR-RFLP 308/342
Lin YC et al. [36] Taiwan Asian unknown PCR-RFLP 297/280
Saini R et al. [37] Malaysia Asian healthy PCR-CTPP 99/90