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. 2011 Feb 25;11:135. doi: 10.1186/1471-2458-11-135

Table 1.

Participants' Characteristics at Baseline by Race/Ethnicity

White n = 137 Black n = 144 Latino n = 140
n [%] or mean (±SD) n [%] or mean (±SD) n [%] or mean (±SD) p value

Demographics
Sex 0.022
 Female 78 [56.9] 86 [59.7] 62 [44.3]
 Male 59 [43.1] 58 [40.3] 78 [55.7]
Age 42.9 (±11.7) 44.8 (±9.9) 36 (±10.2) <0.001
Partner Status <0.001
 Married/living with partner 42 [30.9] 35 [24.5] 67 [48.6]
 Other (e.g., single) 94 [69.1] 108 [75.5] 71 [51.4]

Socioeconomic Status
Annual Household Income <0.001
 <20,000 47 [39.2] 76 [57.1] 35 [29.4]
 ≥20,000 73 [60.8] 57 [42.9] 84 [70.6]
Educational Level 0.009
 <High school 14 [10.3] 17 [11.9] 27 [19.6]
 High school/GED 29 [21.3] 29 [34.3] 42 [30.4]
 Some college (no degree) 43 [31.6] 44 [30.8] 41 [29.7]
 College degree 50 [36.8] 33 [23.0] 28 [20.3]
Employment Status <0.001
 Employed 71 [52.6] 68 [47.9] 101 [73.0]
 Unemployed 64 [47.4] 74 [52.1] 37 [26.8]

Smoking Characteristics
Average number of CPD 23.4 (±9.1) 20.9 (±12.0) 19 (±9.0) 0.001
Number of years smoked 23.2 (±11.8) 23.5 (±11.3) 18 (±9.3) <0.001

Social Status Ladder 6.0 (±1.9) 5.8 (±1.7) 6.0 (±1.8) 0.507

Note: CPD = Self-reported number of cigarettes smoked per day at baseline. GED = General Equivalency Diploma.