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Table 4 Multivariate relationships between home characteristics and significant risk factors

From: Heat protection behaviour in the UK: results of an online survey after the 2013 heatwave

Home characteristics Number and percentage whose home had a specific characteristic Significant factors (α = 0.05) Relative risk ratio [95 % CI]
Installed air conditioner N=47, %=3.2 Age group (base: 18–25)  
26-60 0.4 [0.2, 0.9]*
61-75 0.2 [0.1, 0.6]*
76+ 0.5 [0.2, 1.6]
Sex (base: male)  
Female 0.8 [0.4, 1.6]
Ethnicity (base: Non White)  
White 0.3 [0.1, 0.8]*
Location (base: South of England)  
East of England and the Midlands 1.5 [0.6, 3.6]
London 1.5 [0.5, 4.6]
North 2.0 [0.7, 5.4]
Scotland 0.0 [0.0, 0.0]
Wales 1.2 [0.2, 6.1]
Northern Ireland 0.0 [0.0, 0.0]
Education level (base: higher level/university qualification)  
A-Levels/vocational level 3 1.0 [0.5, 2.3]
GCSE O Levels/vocational level 2 0.9 [0.4, 1.9]
Other/ unknown qualification 0.9 [0.1, 7.4]
Income (base: <£15,000 gross yearly)  
£15,000 - £29,999 gross yearly 1.7 [0.7, 4.1]
£30,000 - £49,999 gross yearly 1.1 [0.4, 3.1]
> £50,000 gross yearly 0.9 [0.3, 3.0]
Dark curtains N = 911, % = 61.7 None  
Portable air conditioner N = 265, % = 18.1 Age group (base: 18–25)  
26-60 0.5 [0.3, 0.8]
61-75 0.5 [0.3, 0.9]
Shutters N = 172, % = 11.6 Age group (base: 18–25)  
26-60 0.4 [0.2, 0.7]
61-75 0.3 [0.2, 0.5]
76+ 0.5 [0.2, 0.9]
Ethnicity (base: Non White)  
White 0.4 [0.2, 0.6]
Location (base: South of England)  
London 2.1 [1.2, 3.8]
Loft/wall insulation N = 1144, % = 77.2 Age group (base: 18–25)  
26-60 1.7 [1.1, 2.6]
61-75 3.4 [2.1, 5.5]
76+ 3.5 [1.9, 6.2]
Location (base: South of England)  
London 0.4 [0.3, 0.7]
Income (base: <£15,000 gross yearly)  
£15,000 - £29,999 gross yearly 1.5 [1.0, 2.1]
£30,000 - £49,999 gross yearly 1.5 [1.0, 2.2]
>£50,000 gross yearly 1.6 [1.0, 2.5]
Light curtains N = 1085, % = 73.4 Age group (base: 18–25)  
61-75 2.0 [1.3, 3.1]
Location (base: South of England)  
London 0.6 [0.4, 1.0]
Education level (base: higher level/university qualification)  
O-level/vocational level 2 0.7 [0.5, 0.9]
  1. *Significant variables at α = 0.05