H pylori seroprevalence in patients with lung cancer

Table 1 Mean (SD) characteristics of the study cases and controls

Variables	Cases	Controls	P1
	(n = 40)	(n = 40)
Sex (M/F)	32/8	25/15	0.03
Age (yr)	55.50 (11.91)	43.08 (12.60)	> 0.05
H pylori IgG level (U/mL)	1.37 (0.74)	1.07 (0.44)	> 0.05
H pylori serology2			0.65
Positive for IgG antibodies to H pylori	21 (52.5)	18 (45.0)
Negative for IgG antibodies to H pylori	13 (32.5)	17 (42.5)

¹All P values are for 2-tailed t tests.

²Six case subjects and 5 control subjects had borderline results and were excluded from the study.

Table 2 Frequency of gastrointestinal symptoms in patients and normal controls

Symptoms	Cases	Controls	P
	(n = 40)	(n = 40)
Epigasteric pain	8/40	10/40	NS
Heartburn	10/40	9/40	NS
Bloating	11/40	8/40	NS

NS: not significant.