Data are presented as mean¡SD or n (%), unless otherwise stated. FEV1:
forced expiratory volume in 1 s; % pred: % predicted; FVC: forced vital
capacity; COPD: chronic obstructive pulmonary disease; SGRQ: St George’s
Respiratory Questionnaire; NHER: National Home Energy Rating; EAFC:
Estimated Annual Fuel Costs to heat according to housing guidelines. #: 11
participants had no saliva for cotinine analyses; "
: missing for one participant;
+
: admissions in 12 months before study entry; 1
: three homes were privately
rented, these are included in the social housing category.