Int. J. Environ. Res. Public Health 2009, 6 702 Table 4. Cont. Consultation of intense cold warning: 0.0923  often or always 32.6 % 67.4 %  sometimes 29.7 % 70.3 %  rarely or never 26.6 % 73.4 % Consultation of humidity rate: 0.0225  often or always 34.6 % 65.4 %  sometimes 28.0 % 72.0 %  rarely or never 29.2 % 70.8 % Outings despite the intense cold wave For shopping: 0.0058  often or always 29.2 % 80.8 %  occasionally 30.3 % 69.7 %  rarely or never 38.2 % 61.8 % For intense physical activities outdoors (e.g. running): 0.0054  often or always 27.3 % 82.7 %  occasionally 30.7 % 69.3 %  rarely or never 35.1 % 64.9 % More layers than usual: < 0.0001  always 26.1 % 73.9 %  often 29.4 % 70.6 %  occasionally 39.7 % 60.3 %  rarely 40.2 % 59.8 %  never 36.7 % 63.3 % Head covering: 0.0991  always 29.5 % 70.5 %  often 28.7 % 71.3 %  occasionally 36.5 % 63.5 %  rarely 39.3 % 60.7 %  never 36.6 % 63.4 % Scarf: 0.0773  always 30.0 % 70.0 %  often 28.9 % 71.1 %  occasionally 39.8 % 60.2 %  rarely 41.6 % 58.4 %  never 30.0 % 70.0 % Belief on the contribution of anthropogenic causes to climate 0.0554 change in the last fifty years:  a lot 29.4 % 70.6 %  average 32.0 % 68.0 %  not much 33.0 % 67.0 %  not at all 40.9 % 59.1 % 1 Use of remote car starters was related to the independent variables using the Rao-Scott likelihood ratio chi-square test, which is a design-adjusted version of the Pearson chi-square test. Non significant variables included: Age, activity status in last 12 months, income from all sources in last 12 months, perceived health status, having at least one chronic disease diagnosed by a physician for last six months, requires a technical aid for outdoor trips, requires accompaniment (animal or person) for outdoor trips, perceived influence of extreme meteorological conditions on health, consultation of smog warnings, adaptation of clothing behaviour to weather conditions, observance of preventive advice for smog or extreme meteorological conditions, clothing warmer than usual in some conditions. 2 The total percentages for a given variable may not be exactly 100%, due to rounding to the closest decimal. To simplify the presentation, percentages below 2% for missing data have not been reported.