Table 1

Comparison of treatment groups by demographic factors at entry to study

FactorsAS (n=109)AS+NRT (n=136)p value (χ2 test)
NRT = nicotine replacement therapy; AS = advice and support; IHD + risks = ischaemic heart disease and risk factors for this (hyperlipidaemia, diabetes, family history, etc); COPD = chronic obstructive pulmonary disease.
Age (years)
    <401021
    40–4918330.1309
    50–593435
    ≥604746
Sex
    Male5557
    Female54790.1821
Disease
    IHD + risks2229
    COPD40540.9491
    Other lung disease2931
    Vascular disease66
    Other disease1216
No of cigarettes smoked
    ≤152937
    16–2549510.4636
    >253147
Partner smokes
    Yes38680.0540 (including no partner)
    No3235
    No partner3833p = 0.1200 (excluding no partner)
    Not stated10