Table 1. Baseline descriptive characteristics of self-identified African American men and women Participating in the prostate, lung, colorectal, and ovarian cancer screening trial by quintiles of neighborhood socioeconomic status, United States, 1993a.
| Quintiles of neighborhood Socioeconomic Status | |||||||
|---|---|---|---|---|---|---|---|
| Q1 | Q2 | Q3 | Q4 | Q5 | Overall | P | |
| Variable | N = 449 | N = 447 | N = 447 | N = 449 | N = 447 | N = 2239 | |
| Male (%) | 48.8 | 43.6 | 42.1 | 47.7 | 43.2 | 45.1 | 0.17 |
| Age (mean, SD) | 61.94 (5.36) | 62.24 (5.32) | 61.75 (5.23) | 61.56 (5.19) | 61.22 (4.99) | 61.74 (5.23) | 0.045 |
| Education (%) | < .001 | ||||||
| Less Than 8 Years | 2.9 | 1.6 | 2 | 1.6 | 0.9 | 1.8 | |
| 8–11 Years | 18.7 | 12.1 | 11.2 | 6.2 | 2.9 | 10.2 | |
| 12 Years Or Completed High School | 25.2 | 28.2 | 17.7 | 14.7 | 9.6 | 19.1 | |
| Post High School Training Other Than College | 10.2 | 13.6 | 9.2 | 10.5 | 7.8 | 10.3 | |
| Some College | 28.3 | 24.8 | 29.1 | 29.8 | 26 | 27.6 | |
| College Graduate | 7.8 | 10.7 | 14.5 | 14.3 | 18.8 | 13.2 | |
| Postgraduate | 6.9 | 8.9 | 16.3 | 22.9 | 34 | 17.8 | |
| Body Mass Index (mean (SD)) | 29.45 (5.79) | 29.30 (5.85) | 29.35 (6.08) | 28.82 (5.85) | 28.15 (4.69) | 29.01 (5.69) | 0.003 |
| Marital Status (%) | < .001 | ||||||
| Married or Living as Married | 47.9 | 48.8 | 56.2 | 55 | 65.5 | 54.7 | |
| 16 | 15.4 | 11.4 | 11.1 | 9.4 | 12.7 | ||
| Divorced | 23.8 | 24.6 | 25.3 | 25.2 | 20.1 | 23.8 | |
| Separated | 4.7 | 5.6 | 4.3 | 4.2 | 1.3 | 4 | |
| Never Married | 7.6 | 5.6 | 2.9 | 4.5 | 3.6 | 4.8 | |
| Smoking Status (%) | 0.002 | ||||||
| Never Smoked Cigarettes | 35 | 41.6 | 37.8 | 39 | 41.4 | 38.9 | |
| Current Cigarette Smoker | 24.7 | 19 | 19.9 | 16.9 | 12.8 | 18.7 | |
| Former Cigarette Smoker | 40.3 | 39.4 | 42.3 | 44.1 | 45.9 | 42.4 | |
| Census Division (%) | < .001 | ||||||
| Northeast | 9.1 | 11 | 10.3 | 12.7 | 13.6 | 11.3 | |
| South | 60.8 | 55.7 | 55.3 | 54.3 | 60 | 57.2 | |
| Midwest | 29.8 | 32.7 | 32.9 | 29 | 23.5 | 29.6 | |
| West | 0.2 | 0.4 | 0.9 | 3.6 | 1.8 | 1.4 | |
| Other | 0 | 0.2 | 0.7 | 0.4 | 1.1 | 0.5 | |
| Hypertension over follow-up (%) | 33.9 | 36.5 | 41.4 | 41.4 | 41.2 | 38.9 | 0.055 |
| Diabetes over follow-up (%) | 12.2 | 11.6 | 15 | 12 | 15.4 | 13.3 | 0.29 |
| nSES scoreb (mean (SD)) | -3.24 (0.95) | -1.49 (0.45) | 0.07 (0.43) | 1.57 (0.46) | 3.26 (0.66) | 0.03 (2.35) | < .001 |
| GWAS Ancestry Admixture Percentage | |||||||
| African (mean (SD)) | 77.59 (12.63) | 76.78 (13.51) | 74.06 (13.24) | 73.59 (14.27) | 69.39 (17.17) | 74.28 (14.53) | < .001 |
| European (mean (SD)) | 20.11 (12.54) | 20.96 (13.51) | 23.67 (13.25) | 24.04 (14.46) | 27.83 (16.77) | 23.32 (14.43) | < .001 |
| Asian (mean (SD)) | 2.30 (2.22) | 2.26 (2.27) | 2.26 (2.22) | 2.37 (2.31) | 2.78 (6.72) | 2.40 (3.62) | 0.15 |
| Census tract % African Americans (mean (SD)) | 91 (12) | 81 (25) | 69 (32) | 37 (34) | 29 (32) | 61 (37) | < .001 |
Abbreviations: GWAS, Genome-Wide Association Study Q, quintile, SD, standard deviation.
aCharacteristics assessed at baseline unless otherwise stated
bnSES was assessed at residence in 2012 or at last known residence if deceased