Table 1 Demographic characteristics of the study population
| Â | Total | IPC group | E-TAU group | Â | Â |
|---|---|---|---|---|---|
|  | N = 86 | n = 43 | n = 43 | Statistics | p |
Age, years: mean (s.d.) | 43.84 (14.76) | 46.42 (15.22) | 41.26 (13.99) | t = 1.64 | .11 |
Gender, female: n (%) | 81 (94.20) | 40 (93.00) | 41 (95.30) | Ï°2Â =Â 0.21 | .65 |
Race/ethnicity: n (%) | Â | Â | Â | Ï°2Â =Â 4.22 | .24 |
 African American/Black | 8 (9.30) | 4 (9.30) | 4 (9.30) |  |  |
 White/Caucasian | 36 (41.90) | 19 (44.20) | 17 (39.50) |  |  |
 Biracial/Multiracial | 38 (44.20) | 20 (46.50) | 18 (41.90) |  |  |
 Other | 4 (4.70) | 0 (0.00) | 4 (9.30) |  |  |
Marital status: n (%) | Â | Â | Â | Ï°2Â =Â 3.11 | .08 |
 Not partnered | 34 (39.50) | 13 (30.20) | 21 (48.80) |  |  |
Number of children: | Â | Â | Â | Ï°2Â =Â 2.83 | .59 |
 0 | 25 (29.10) | 11 (25.60) | 14 (32.60) |  |  |
 1 | 31 (36.00) | 18 (41.90) | 13 (30.20) |  |  |
 2 | 24 (27.90) | 10 (23.30) | 14 (32.60) |  |  |
 ≥3 | 6 (7.00) | 4 (9.30) | 2 (4.60) |  |  |
Education: n (%) | Â | Â | Â | Ï°2Â =Â 4.16 | .13 |
 < High school degree | 51 (59.30) | 30 (69.80) | 21 (48.80) |  |  |
 High school degree or equivalent | 28 (32.60) | 11 (25.60) | 17 (39.50) |  |  |
 Education beyond high school degree | 7 (8.10) | 2 (4.70) | 5 (11.60) |  |  |
Religion: n (%) | Â | Â | Â | Ï°2Â =Â 2.11 | .55 |
 Catholic | 32 (37.20) | 16 (37.20) | 16 (37.20) |  |  |
 Protestant | 35 (40.70) | 18 (41.90) | 17 (39.50) |  |  |
 Other | 5 (5.80) | 1 (2.30) | 4 (9.30) |  |  |
 None | 14 (16.30) | 8 (18.60) | 6 (14.00) |  |  |
Socio-economical classa: n (%) | Â | Â | Â | Ï°2Â =Â 6.18 | .19 |
 A1/A2 | 2 (2.30) | 2 (4.70) | 0 (0.00) |  |  |
 B1/B2 | 21 (24.40) | 12 (27.90) | 9 (20.90) |  |  |
 C1/C2 | 48 (55.80) | 19 (44.20) | 29 (67.50) |  |  |
 D | 9 (10.50) | 6 (14.00) | 3 (7.00) |  |  |
 E | 6 (7.00) | 4 (9.30) | 2 (4.70) |  |  |
 Household monthly incomeb (US$): mean (s.d.) | 687.74 (603.79) | 785.10 (746.07) | 595.37 (417.37) | t = 1.38 | .17 |