TABLE 1.
Demographic characteristics of groups by chosen method of follow-up assessment
| IVR responders (n=131) | Phone responders (n=189) | Pre-IVR phone responders (n=227) | |
|---|---|---|---|
| Sex, n (%) | |||
| Male | 81 (61.8) | 126 (66.7) | 155 (68.3) |
| Female | 50 (38.2) | 63 (33.3) | 72 (31.7) |
| Significance test | χ2=1.58, df=2, P=0.45 | ||
| Education, n (%) | |||
| Less than 9th grade | 3 (2.3) | 4 (2.1) | 5 (2.2) |
| Less than 12th grade | 20 (15.3) | 36 (19.0) | 33 (14.5) |
| High school graduate | 40 (30.5) | 55 (29.1) | 85 (37.4) |
| Some college | 48 (36.6) | 65 (34.4) | 70 (30.8) |
| College degree | 20 (15.3) | 29 (15.3) | 34 (15.0) |
| Significance test | χ2=4.81, df=8, P=0.78 | ||
| Marital status, n (%) | |||
| Single | 45 (34.4) | 78 (41.3) | 70 (30.8) |
| Married | 59 (45.0) | 78 (41.3) | 119 (52.4) |
| Divorced/widowed | 26 (19.8) | 29 (15.3) | 36 (15.9) |
| No response | 1 (0.8) | 4 (2.1) | 2 (0.9) |
| Significance test | χ2=8.75, df=6, P=0.19 | ||
| Annual income (US$), n (%) | |||
| <5,000 | 2 (1.5) | 4 (2.1) | 5 (2.2) |
| 5,000–10,000 | 12 (9.2) | 6 (3.2) | 9 (4.0) |
| 10,000–15,000 | 14 (10.7) | 8 (4.2) | 18 (7.9) |
| 15,000–25,000 | 23 (17.6) | 53 (28.0) | 64 (28.2) |
| 25,000–40,000 | 42 (32.1) | 49 (25.9) | 78 (34.4) |
| 40,000–60,000 | 24 (18.3) | 44 (23.3) | 41 (18.1) |
| >60,000 | 10 (7.6) | 11 (5.8) | 7 (3.1) |
| No response | 4 (3.1) | 14 (7.4) | 5 (2.2) |
| Significance test | χ2=30.43, df=14, P=0.007 | ||
| Ethnicity, n (%) | |||
| Black | 7 (5.3) | 9 (4.8) | 11 (4.8) |
| White, non-Hispanic | 118 (90.1) | 163 (86.2) | 207 (91.2) |
| Hispanic | 4 (3.1) | 13 (6.9) | 8 (3.5) |
| Asian | 1 (0.8) | 1 (0.5) | 0 (0.0) |
| No response | 1 (0.8) | 3 (1.6) | 1 (0.4) |
| Significance test | χ2=6.82, df=8, P=0.56 | ||
| Company size, n (%) | |||
| Small (≤50) | 23 (17.6) | 40 (21.2) | 38 (18.7) |
| Medium (51–500) | 51 (38.9) | 75 (39.7) | 100 (41.5) |
| Large (>500) | 57 (43.5) | 74 (39.2) | 89 (39.9) |
| Significance test | χ2=2.35, df=4, P=0.67 | ||
| Age, years (mean ± SD) | 36.9±11.7 | 36.3±11.6 | 36.3±10.5 |
| Significance test | F(2,544)=0.17, P=0.84 | ||
| Years with employer (mean ± SD) | 5.0±6.1 | 4.6±5.6 | 4.8±6.8 |
| Significance test | F(2,544)=0.20, P=0.82 | ||
df Degrees of freedom; IVR Interactive voice response