From: Carboxyhaemoglobin levels and their determinants in older British men
Model 1 | Model 2 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
current smoking | COHb | COHb | ||||||||
N | % | Geometric mean | 95% | CI | p | Geometric mean | 95% | CI | p | |
Active smoking | <0.0001 | <0.0001 | ||||||||
Non | 1080 | - | 0.32 | 0.30 | 0.33 | 0.32 | 0.30 | 0.33 | ||
Ex | 1825 | - | 0.34 | 0.33 | 0.36 | 0.35 | 0.34 | 0.36 | ||
Pipe or cigar (light) | 76 | - | 0.60 | 0.50 | 0.72 | 0.61 | 0.50 | 0.74 | ||
Pipe or cigar (heavy) | 99 | - | 1.50 | 1.28 | 1.77 | 1.53 | 1.29 | 1.81 | ||
Cigarette smoking <5/d | 102 | - | 1.36 | 1.16 | 1.59 | 1.39 | 1.17 | 1.64 | ||
cigarette smoking 5–10/d | 126 | - | 2.29 | 1.98 | 2.65 | 2.18 | 1.87 | 2.53 | ||
cigarette smoking 10–20/d | 184 | - | 3.22 | 2.86 | 3.63 | 3.07 | 2.70 | 3.48 | ||
cigarette smoking >20/d | 51 | - | 3.29 | 2.62 | 4.13 | 3.18 | 2.52 | 4.01 | ||
Passive smoking | <0.0001 | 0.2306 | ||||||||
No | 2620 | 12.8 | 0.40 | 0.38 | 0.42 | 0.45 | 0.44 | 0.47 | ||
Yes | 983 | 34.4 | 0.66 | 0.62 | 0.70 | 0.47 | 0.45 | 0.50 | ||
Gas cooking | <0.0001 | <0.0001 | ||||||||
No | 1394 | 16.3 | 0.40 | 0.38 | 0.42 | 0.42 | 0.40 | 0.44 | ||
Yes | 2083 | 20.2 | 0.51 | 0.48 | 0.53 | 0.48 | 0.47 | 0.50 | ||
Gas heating | 0.7934 | 0.9968 | ||||||||
No | 455 | 21.3 | 0.46 | 0.42 | 0.51 | 0.46 | 0.42 | 0.50 | ||
Yes | 3074 | 18.2 | 0.46 | 0.44 | 0.47 | 0.46 | 0.44 | 0.47 | ||
Central heating | <0.0001 | 0.0083 | ||||||||
No | 340 | 29.6 | 0.64 | 0.57 | 0.71 | 0.52 | 0.47 | 0.57 | ||
Yes | 3201 | 17.5 | 0.44 | 0.43 | 0.46 | 0.45 | 0.44 | 0.46 | ||
Double glazing | 0.7657 | 0.8951 | ||||||||
Yes | 1778 | 18.6 | 0.45 | 0.43 | 0.48 | 0.45 | 0.44 | 0.47 | ||
No | 1594 | 18.9 | 0.46 | 0.44 | 0.49 | 0.46 | 0.44 | 0.48 | ||
in part | 169 | 16.9 | 0.45 | 0.38 | 0.53 | 0.47 | 0.41 | 0.53 |