title: Helicobacter pylori and gastritis in Peruvian patients: relationship to socioeconomic level, age, and sex. The Gastrointestinal Physiology Working Group.
abstract: Studies in 1,120 Peruvian adults suffering from upper gastrointestinal symptoms and stratified according to socioeconomic level, age, and sex have shown the following: Rates of Helicobacter pylori infection range from 3% in patients with normal gastric mucosa to 92% in cases of chronic active gastritis. Age-specific infection rates do not vary with the severity of active gastritis and are similar in men from low and high socioeconomic levels. Women from higher socioeconomic backgrounds show a significantly lower age-specific rate of infection than women from lower levels or from men from either level. In addition, a seroepidemiologic survey of children, predominantly from families from lower socioeconomic levels, demonstrates that infection begins for many of them in the first years of life.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002169:Campylobacter Infections / Q000175:diagnosis / Q000453:epidemiology* / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005756:Gastritis / Q000175:diagnosis / Q000453:epidemiology* / Q000473:pathology; D005773:Gastroscopy; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D010568:Peru / Q000453:epidemiology; D012737:Sex Factors; D012959:Socioeconomic Factors