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Table 1 Characteristics of all studies in meta-analysis

From: Association between polymorphisms in ERCC2 gene and oral cancer risk: evidence from a meta-analysis

Author, year Country Ethnicity Age (case/control) Case gender Control gender SNP Case type No. (case/control) Case Control  
          GG/AA GA/AC AA/CC GG/AA GA/AC AA/CC HWE(P)
     (Male/female) (Male/female)           
Mahimkar MB (2010) [10] India Asian 39.0 ± 13.0/39.0 ± 13.0 60/6 60/2 Rs1799793 OL 66/62 23 13 4 23 21 1 0.13
       Rs13181 OL 66/62 26 20 10 29 23 2 0.32
Wang Y (2007) [11] America Caucasian 58.3 ± 12.8/59.7 ± 11.0 81/63 162/126 Rs1799793 OL 144/288 50 59 16 140 109 29 0.26
       Rs13181 OL 144/288 46 77 21 120 132 28 0.34
Majumder M (2007) [12] India Asian 49.0 ± 11.9/47.0 ± 10.3 196/28 302/87 Rs1799793 OL 224/388 117 89 18 205 146 36 0.18
        OSCC 308/388 152 119 34 205 146 36 0.18
        Total 532/388 269 208 52 205 146 36 0.18
       Rs13181 OL 224/388 105 98 21 190 158 40 0.40
        OSCC 308/388 158 125 26 190 158 40 0.40
        Total 532/388 263 223 47 190 158 40 0.40
Kietthubthew S (2006) [13] Thailand Asian 67.1/68.4 77/29 91/73 Rs13181 OSCC 112/192 83 21 1 126 36 2 0.75
Bau DT (2007) [14] China Asian 53.0 ± 10.1/ 54.4 ± 12.1 None None Rs13181 OC 154/105 134 18 2 89 15 1 0.68
Ramachandran S (2006) [15] India Asian None None None Rs13181 OC 110/110 49 46 15 71 31 8 0.09
        OL 84/110 41 29 14 71 31 8 0.09
        Total 194/110 90 75 29 71 31 8 0.09
  1. OL: Oral leukoplakia, OSCC: Oral squamous cell cancer, OC: oral cancer.
  2. Total is the sum of different case type about the same SNP in each study.