title: Failure of self-disclosure of deferrable risk behaviors associated with transfusion-transmissible infections in blood donors.
abstract: BACKGROUND
  To date, most studies on deferral of blood donors have focused on men who have sex with men (MSM) and/or injecting drug users. Few have examined deferrable risk behaviors relating to transfusion-transmissible infections (TTIs) in general. This study aimed to examine the prevalence of, and factors associated with, nondisclosure of TTI-related risk behaviors in donors.
  
  
  METHODS
  Chinese-speaking donors who had just given blood in Hong Kong were invited to self-complete an anonymous questionnaire. Practices of one or more of seven deferrable risk behaviors associated with TTI were inquired. Factors associated with noncompliance with self-disclosure were evaluated by logistic regression.
  
  
  RESULTS
  Over a 4-week study period in 2012, a total of 1143 donors were recruited. Overall, 0.2% gave a history of drug injection, 1.7% had had sex with sex worker(s), and 0.3% had had sex with a human immunodeficiency virus-infected partner, while none had been paid for sex. Some 1.5% of male donors reported having same-sex behaviors. Factors associated with noncompliance were male gender (odds ratio [OR] 31.1; 95% confidence interval [CI], 3.7-263.6), having multiple sex partners (OR, 89.7; 95% CI, 28.7-279.9), and previous history of temporary deferral (OR, 11.4; 95% CI, 2.5-53.3). If suspected noncompliance was included, the overall prevalence of nondisclosure of deferrable behaviors could be high at 6.5%.
  
  
  CONCLUSIONS
  Albeit uncommon, some donors fail to provide accurate answers to predonation screening questions and are not deferred appropriately. There is room for improvement to make deferral policy acceptable and understandable, so as to minimize the risk of TTI. Efforts are also needed to tackle the paucity of data on noncompliance of non-MSM donors.
authors.affiliation: Stanley Ho Centre for Emerging Infectious Diseases, the Chinese University of Hong Kong, Shatin, Hong Kong.
authors.forename: Horas Tze Hoo
authors.initials: HT
authors.lastname: Wong
authors.affiliation: Stanley Ho Centre for Emerging Infectious Diseases, the Chinese University of Hong Kong, Shatin, Hong Kong.
authors.forename: Shui Shan
authors.initials: SS
authors.lastname: Lee
authors.affiliation: Hong Kong Red Cross Blood Transfusion Service, Kowloon, Hong Kong.
authors.forename: Cheuk-Kwong
authors.initials: CK
authors.lastname: Lee
authors.affiliation: Stanley Ho Centre for Emerging Infectious Diseases, the Chinese University of Hong Kong, Shatin, Hong Kong.
authors.forename: Denise Pui Chung
authors.initials: DP
authors.lastname: Chan
mesh_terms: D000293:Adolescent; D000328:Adult; D044466:Asian People; D017848:Blood-Borne Pathogens; D003430:Cross-Sectional Studies; D018562:Disease Transmission, Infectious; D046148:Donor Selection / Q000379:methods*; D005260:Female; D018451:Homosexuality, Male; D006723:Hong Kong; D006801:Humans; D017053:Infection Control / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D012309:Risk-Taking; D012650:Self Disclosure; D012737:Sex Factors; D019966:Substance-Related Disorders
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