title: Further evidence of ethnic and gender differences for Helicobacter pylori infection among endoscoped patients.
abstract: HeIicobacter pylori infection rate was determined in 697 consecutive patients with ulcer, gastritis, duodenitis and non-ulcer dyspepsia by endoscopy at a Malaysian hospital in 1999-2002. Biopsies of the gastric antrum and body were subjected to the urease test, Gram staining of impression smears and culture examination. Infection was defined as a positive result in at least one test. The infection rates were 32.1, 10.4, 20.0 and 16.2% in ulcer, gastritis, duodenitis and non-ulcer dyspepsia patients, respectively. Overall, the prevalence of H. pylori infection was 14.6%, with the rate among the Indian (21.7%), Chinese (19.2%) and Bangladeshi foreign worker (23.1%) groups significantly higher (P<0.05) than that of the Malays (5.8%). Generally, the prevalence rate among males (18.9%) was significantly higher (P<0.001) than that among females (9.0%), but for a particular ethnic group, such trend and significant differences (P<0.05) were observed only among the Malays. In terms of gender, the prevalence rates of Malay males and females were also significantly lower (P<0.05) than those of Chinese and Indians. In conclusion, there is a significant difference in H. pylori infection prevalence rates among ethnic groups (highest in Indians, then Chinese and unusually low in Malays) and gender groups (highest in males) in Malaysia.
authors.affiliation: School of Biological Sciences, University of Science, Malaysia, 11800 Minden, Pulau Pinang, Malaysia. srisasidharan@yahoo.com
authors.forename: S
authors.initials: S
authors.lastname: Sasidharan
authors.forename: A M
authors.initials: AM
authors.lastname: Uyub
authors.forename: A A
authors.initials: AA
authors.lastname: Azlan
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D004382:Duodenitis / Q000382:microbiology*; D004415:Dyspepsia / Q000382:microbiology*; D016099:Endoscopy, Gastrointestinal; D005260:Female; D005756:Gastritis / Q000382:microbiology*; D016481:Helicobacter Infections / Q000453:epidemiology* / Q000208:ethnology; D016480:Helicobacter pylori / Q000302:isolation & purification; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D013276:Stomach Ulcer / Q000382:microbiology*; D055815:Young Adult