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Table 3 Discrepancies on responses (yes to no, or no to yes) between the HealthQuiz (HQ) and the Donor Health Assessment Questionnaire (DHAQ) among the 1239 study participants.

From: Comparison of deferral rates using a computerized versus written blood donor questionnaire: a randomized, cross-over study [ISRCTN84429599]

Questions

Risk identified on HQ and denied on DHAQ n (%)

Risk identified on DHAQ and denied on HQ n (%)

p value for McNemar's Chi square test

Risk for HIV/AIDS or STDs

   

Since 1977, have you participated in any of the activities that put one at risk for AIDS?*

4/1211 (0.3)

0

0.13

Have you even once shared needles or taken street drugs by needle?

1/101 (0.1)

0

1.00

In the last 12 months have you had sex with someone who may have participated in high-risk activities (sexual background uncertain)?

29/1211 (2.4)

5/1211 (0.4)

0.001

Have you had an AIDS test elsewhere (other than for donating blood)?

8/1239 (0.6)

13/1239 (1.0)

0.383

Had symptoms of AIDS? †

34/1239 (2.7)

2/1239 (0.2)

<0.001

In the last 12 months have you had a tattoo, ear-piercing, acupuncture, electrolysis, needle stick injury or graft?

14/1216 (1.2)

8/1216 (0.7)

0.286

Have you ever had yellow jaundice (other than at birth), hepatitis or liver disease?

17/1216 (1.4)

0

<0.001

In the last 12 months to your knowledge have you come in close (intimate) contact with someone with yellow jaundice or hepatitis?

1/1239 (0.1)

0

1.00

In the last 12 months have you received blood, plasma, clotting factors or immune globulin?

36/1239 (2.9)

1/1239 (0.1)

<0.001

Medication Use

   

In the last 3 days have you taken any type of medication or drugs, except birth control pills or vitamins?

68/1239 (5.5)

27/1239 (2.2)

<0.001

Have you taken Accutane or Tegison for a skin disorder or growth hormone (human pituitary)?

7/1123 (0.6)

0

0.02

In the last month have you taken Accutane for a skin disorder, Proscar or Danazol?

1/94 (1.1)

0

1.00

Illness or exposure

   

Are you free from cold, flu, infection or active allergy today?

50/1239 (4.0)

3/1239 (0.2)

<0.001

Have you had a vaccination in the last 3 months or a rabies shot in the last year?

12/1239 (1.0)

7/1239 (0.6)

0.36

Have you had surgery in the last 6 months?

16/1239 (1.3)

4/1239 (0.3)

0.01

Have you had any of the following?

   

   Epilepsy, coma, stroke, repeated seizures or fainting

21/1239 (1.7)

8/1239 (0.6)

0.02

   Heart or blood pressure problems or heart surgery

216/1239 (17.4)

3/1239 (0.2)

<0.001

   Cancer, diabetes, ulcerative colitis or Crohn's disease

17/1239(1.4)

4/1239 (0.3)

0.007

   Kidney, lung or blood condition

149/1239 (12.0)

4/1239 (0.3)

<0.001

Have you been pregnant in the last 6 months or breastfed in the last 3 months?

3/1239 (0.2)

1/1239 (0.1)

0.625

In the last 3 years have you lived in or visited an area where malaria is common?

3/1239 (0.2)

1/1239 (0.1)

0.625

  1. * these activities included: if male, having sex with another male, even once; sharing needles or taking street drugs by needle; receiving regular treatment with blood or blood products; being the sexual partner of someone who has taken part in any of the above activities or who has contracted AIDS or has tested positive for AIDS † the symptoms of AIDS included: weight loss, night sweats, fever, diarrhea or cough; lumps in the armpits, neck or groin, coloured patches on skin or inside mouth