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. 2013 Jan 10;13:19. doi: 10.1186/1471-2458-13-19

Table 1.

Sociodemographic data for the 80 respondents according to research phase

Characteristics Phase I N (%) Phase III N (%) TOTAL N
Gender
Male
19 (47.5)
27 (67.5)
46
Female
21 (52.5)
13 (32.5)
34
Education
Primary
4 (10.0)
4 (10.0)
8
High School
17 (42.5)
18 (45.0)
35
College
18 (45.0)
18 (45.0)
36
NR
1 (2.5)
0 (0)
1
Socioeconomic class1
A
0 (0)
0 (0)
0
B
11 (27.5)
4 (10.0)
15
C
28 (70.0)
24 (60.0)
52
D
1 (2.5)
9 (22.5)
10
E
0 (0)
3 (7.5)
3
Number of studies
1
24 (60.0)
26 (65.0)
50
2
1 (2.5)
11 (27.5)
12
3
9 (22.5)
2 (5.0)
11
4 or more
6 (15.0)
1 (2.5)
7
Age (years)
≤ 20
1 (2.5)
0 (0)
1
21 - 30
19 (47.5)
1 (2.5)
20
31 - 40
11 (27.5)
4 (10.0)
15
41 - 50
8 (20.0)
14 (35.0)
22
51 - 60
0 (0)
9 (22.5)
9
61 or more
0 (0)
12 (30.0)
12
NR 1 (2.5) 0 (0) 1

NR= No Response.

1A was the highest economic strata. Mean family income (MFI) at the E-level of the ABEP index is very low (below a 'living wage' level considered acceptable for families in the US), whereas a D-level family enjoys a MFI value roughly 1.5 times the E-level MFI. The C-level MFI is roughly 2–3 times the E-level value, A-level and B-level is approximately 27 times and 9 times the E-level MFI value respectively.