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Table 2 Demographics and pathologies of case and control groups, n (%)

From: Single-nucleotide polymorphism rs17548629 in RIPK1 gene may be associated with lung cancer in a young and middle-aged Han Chinese population

  Case group Control group χ2 p
Age, years
 ≤ 50 237 (41.5) 276 (45.3) 2.847 0.241
 51–54 138 (24.2) 151 (24.8)
 55–59 196 (34.3) 182 (29.9)
Gender
 Male 364 (63.7) 397 (65.2) 0.267 0.626
 Female 207 (36.3) 212 (34.8)
Education
 Elementary school or less 278 (48.7) 208 (34.2) 27.815 < 0.001
 Middle school 246 (43.1) 319 (52.4)
 College and above 47 (8.2) 82 (13.5)
Marital status
 Married 550 (96.3) 575 (94.4) 2.407 0.130
 Unmarried and other 21 (3.7) 34 (5.6)
Pathology
 Adenocarcinoma 285 (49.9)   
 Squamous cell carcinoma 140 (24.5)   
 Alveolar cell carcinoma 39 (3.3)   
 Small cell carcinoma 47 (8.2)   
 Large cell carcinoma 14 (2.5)   
 Undifferentiated carcinoma 16 (2.8)   
 Others 30 (5.3)