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Table 1 Characteristics of patients with GC and health controls

From: Association of PTGER4 and PRKAA1 genetic polymorphisms with gastric cancer

Variable

Cases (n = 509)

Controls (n = 507)

p

Age

Mean ± SD, years

61.35 ± 8.84

61.12 ± 11.33

0.712

> 60 years

279 (55%)

315 (62%)

 

≤ 60 years

230 (45%)

192 (38%)

Gender

Male

382 (75%)

379 (75%)

0.913

Female

127 (25%)

128 (25%)

Smoking

Yes

233 (56%)

114 (22%)

0.333

No

270 (53%)

172 (34%)

Unavailable

6 (1%)

221 (44%)

Drinking

Yes

133 (26%)

119 (23%)

0.063

No

357 (70%)

142 (28%)

Unavailable

19 (4%)

246 (49%)

BMI

> 24 kg/m2

72 (14%)

183 (36%)

< 0.001

≤ 24 kg/m2

401 (79%)

170 (34%)

Unavailable

36 (7%)

154 (30%)

Lymph nodes metastasis

Yes

235 (46%)

  

No

97 (19%)

  

Unavailable

177 (35%)

  

Stage

I-II

109 (21%)

  

III-IV

239 (47%)

  

Unavailable

161 (32%)

  

Adenocarcinoma

Yes

314 (62%)

  

No

195 (38%)

  
  1. SD: standard deviation; BMI: body mass index
  2. p values were calculated by χ2 test or the Student’s t test
  3. p < 0.05 indicates statistical significance