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Table 3 Summary of questionnaire responses: history of cutaneous and allergic illness. n (%)

From: Cutaneous hypersensitivity reactions to freshwater cyanobacteria – human volunteer studies

 

Outpatients

Reference subjects

 
 

Yes

No

Not sure

Yes

No

Not sure

p

Eczema or dermatitis

Ever diagnosed

12(60)

4(20)

1(5)

7(37)

12(63)

0

0.04

Last two years

11(55)

3(15)

3(15)

5(26)

13(68)

0

0.01

Asthma

Ever diagnosed

6(30)

13(65)

0

8(42)

10(53)

0

0.51

Last two years

5(25)

14(70)

0

5(26)

13(68)

0

1.0

Hay fever

Ever diagnosed

2(10)

15(75)

1(5)

5(26)

14(74)

0

0.41

Last two years

3(15)

14(70)

1(5)

4(21)

15(79)

0

1.0

Urticaria

Ever diagnosed

1(5)

17(85)

1(5)

2(11)

16(84)

0

1.0

Last two years

0

17(85)

1(5)

1(5)

16(84)

1(5)

1.0

Rash of unknown cause

Last two years

10(50)

4(20)

3(15)

3(16)

15(79)

0

0.003

Rash after freshwater recreation

1(5)

16(80)

1(5)

0

15(79)

3(16)

1.0

  1. n = 20 for the outpatient subject group; n = 19 for the reference group. Where sum of row answers (yes/no/not sure) is below the total, shortfall represents unanswered questions.
  2. p-values: Fisher's exact test comparing proportion of "yes" and "no" answers between outpatient and reference subject groups