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Table 3 Demographic characteristics of study participants in the validation sample and differences in THS overall scores and sub-scale scores

From: Development of a scale assessing Beliefs About ThirdHand Smoke (BATHS)

  N % THS score p-value THS persistence p-value THS health p-value
Mean SD Mean SD Mean SD
Full sample 335 100 3.92 0.63   3.79 0.66   3.86 0.59  
Age group (N/%)
 18–24 25 7.5% 3.8 0.44 0.68 3.8 0.55 0.58 3.8 0.54 0.77
 25–39 124 37.0% 3.8 0.55 3.9 0.59 3.8 0.66
 40–65 174 51.9% 3.9 0.63 4.0 0.67 3.8 0.69
 65 and older 12 3.6% 3.7 0.59 3.8 0.70 3.6 0.62
Gender (N/%)
 Male 55 16.4% 3.8 0.68 0.46 3.8 0.72 0.2853 3.8 0.75 0.78
 Female 280 83.6% 3.9 0.57 3.9 0.62 3.8 0.64  
Marital Status (N/%)
 Married/living with partner 186 55.5% 3.8 0.59 0.49 4.0 0.65 0.48 3.8 0.67 0.58
 Single/divorced/separated/widowed 148 44.2% 3.9 0.59 3.9 0.63 3.8 0.65  
Race (N/%)
 White 48 14.3% 3.8 0.56 0.90 4.0 0.61 0.57 3.7 0.60 0.44
 African American 234 69.9% 3.9 0.60 3.9 0.64 3.8 0.68
 Latina/o 41 12.2% 3.9 0.58 3.9 0.66 3.9 0.60
 Other 12 3.6% 3.8 0.52 3.8 0.50 3.7 0.69
Education (N/%)
 High school graduate/GED or less 208 62.1% 3.8 0.59 0.19 3.9 0.65 0.04 3.8 0.65 0.71
 Some college/vocational/technical school 109 32.5% 3.9 0.56 4.0 0.59 3.8 0.66
 College graduate or higher 18 5.4% 4.1 0.68 4.3 0.62 3.9 0.79
Employment (N/%)            
 Employed 91 27.2% 3.9 0.54 0.51 3.9 0.61 0.93 3.9 0.61 0.21
 Not employed 240 71.6% 3.8 0.61 3.9 0.64 3.8 0.68
Income (N/%)
 $10,000 or less 154 46.0% 3.8 0.57 0.91 3.9 0.62 0.61 3.8 0.65 0.99
 $10,001 to $25,000 133 39.7% 3.9 0.62 4.0 0.66 3.8 0.68
 $25,001 to $50,000 35 10.4% 3.8 0.61 3.9 0.62 3.8 0.69
 $50,001 to $75,000 6 1.8% 3.9 0.58 4.1 0.70 3.7 0.55
 More than $75,000 4 1.2% 3.9 0.17 4.1 0.55 3.8 0.25
Home ownership
 Owner 70 20.9% 4.0 0.62 0.04 4.1 0.66 0.02 3.9 0.68 0.13
 Resident 259 77.3% 3.8 0.58 3.9 0.62 3.8 0.68
Home smoking ban
 No ban 70 20.9% 3.6 0.60 0.001 3.8 0.62 0.02 3.5 0.69 0.0004
 Partial ban 97 29.0% 3.8 0.58 3.9 0.63 3.8 0.65
 Full ban 168 50.1% 4.0 0.57 4.0 0.64 3.9 0.63
Smoking status
 Smoker 202 60.3% 3.8 0.59 0.02 3.9 0.64 0.09 3.7 0.65 0.01
 Non-smoker 133 39.7% 4.0 0.58 4.0 0.62 3.9 0.66
Group assignment
 Intervention group 158 47.2% 3.97 0.59   4.04 0.66   3.89 0.65  
 Control group 177 52.8% 3.76 0.57 0.001 3.82 0.59 0.002 3.69 0.66 0.005
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