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Table 5 Prevalence of CO risk categories across the sample and health symptom response by risk category

From: Self-reported neurological symptoms in relation to CO emissions due to problem gas appliance installations in London: a cross-sectional survey

CO Risk category

Prevalence in

sample % (n)

No health

symptoms

reported

1 or more

health

symptoms

reported

No

symptom

information

A_Very High

2% (13)

77% (10)

23% (3)

0% (0)

B_High

4% (22)

82% (18)

18% (4)

0% (0)

C_Medium

7% (42)

81% (34)

17% (7)

2% (1)

D_Low

19% (111)

89% (99)

10% (11)

1% (1)

Little or no risk

69% (409)

93% (379)

7% (28)

0% (2)

Total

100% (597)

90% (540)

9% (53)

1% (4)