Table 3 Participation of parents invited to participate in the HOEPS pilot, by survey instrument and case or control status
Distribution of demographic characteristics | Participation rate | |||||
|---|---|---|---|---|---|---|
Eligible | Participated | |||||
MQ | CATI | MQ | CATI | MQ | CATI | |
(n = 195) | (n = 197) | (n = 148) | (n = 120) | (n = 148) | (n = 120) | |
N (%) | N (%) | N (%) | N (%) | % | % | |
Case status | ||||||
Cases | 94 (48.2) | 95 (48.2) | 73 (49.3) | 65 (54.2) | 77.7 | 68.4 |
Controls | 101 (51.8) | 102 (51.8) | 75 (50.7) | 55 (45.8) | 74.3 | 53.9 |
Center | ||||||
Iowa | 123 (63.1) | 123 (62.4) | 92 (62.2) | 78 (65.0) | 74.8 | 63.4 |
New York | 72 (36.9) | 74 (37.6) | 56 (37.8) | 42 (35.0) | 77.8 | 56.8 |
Mother’s age at conception | ||||||
<20 years | 17 (8.7) | 15 (7.6) | 10 (6.8) | 7 (5.8) | 58.8 | 46.7 |
20-24 years | 49 (25.1) | 45 (22.8) | 36 (24.3) | 24 (20.0) | 73.5 | 53.3 |
25-29 years | 56 (28.7) | 60 (30.5) | 42 (28.4) | 40 (33.3) | 75.0 | 66.7 |
30-34 years | 49 (25.1) | 57 (28.9) | 39 (26.4) | 34 (28.3) | 79.6 | 59.6 |
≥35 years | 24 (12.3) | 20 (10.2) | 21 (14.2) | 15 (12.5) | 87.5 | 75.0 |
Mother’s race/ethnicity | ||||||
White, non-Hispanic | 171 (87.7) | 176 (89.3) | 134 (90.5) | 108 (90.0) | 78.4 | 61.4 |
Other race | 21 (10.8) | 21 (10.7) | 13 (8.8) | 12 (10.0) | 61.9 | 57.1 |
Missing/Unknown | 3 (1.5) | 0 (0.0) | 1 (0.7) | 0 (0.0) | NC | NC |
Mother’s education | ||||||
<12 years, or did not complete high school (HS) | 12 (6.2) | 11 (5.6) | 6 (4.1) | 5 (4.2) | 50.0 | 45.5 |
12 years, completed HS, or equivalent | 38 (19.5) | 43 (21.8) | 27 (18.2) | 25 (20.8) | 71.1 | 58.1 |
1-3 years college, or completed technical college | 70 (35.9) | 68 (34.5) | 53 (35.8) | 37 (30.8) | 75.7 | 54.4 |
≥4 years of college; bachelor's degree or higher | 75 (38.5) | 75 (38.1) | 62 (41.9) | 53 (44.2) | 82.7 | 70.7 |
Family’s annual income | ||||||
<$20,000 | 36 (18.5) | 42 (21.3) | 24 (16.2) | 22 (18.3) | 66.7 | 52.4 |
$20,000 - $39,999 | 53 (27.2) | 52 (26.4) | 39 (26.4) | 32 (26.7) | 73.6 | 61.5 |
≥$40,000 | 100 (51.3) | 98 (49.7) | 80 (54.1) | 63 (52.5) | 80.0 | 64.3 |
Missing | 6 (3.1) | 5 (2.5) | 5 (3.4) | 3 (2.5) | 83.3 | 60.0 |
Mother smoked | ||||||
Yes | 56 (28.7) | 49 (24.9) | 37 (25.0) | 21 (17.5) | 66.1 | 42.9 |
No | 139 (71.3) | 147 (74.6) | 111 (75.0) | 98 (81.7) | 79.9 | 66.7 |
Missing | 0 (0.0) | 1 (0.5) | 0 (0.0) | 1 (0.8) | NC | NC |
Parity | ||||||
Primiparous | 87 (44.6) | 69 (35.0) | 67 (45.3) | 41 (34.2) | 77.0 | 59.4 |
Multiparous | 108 (55.4) | 127 (64.5) | 81 (54.7) | 78 (65.0) | 75.0 | 61.4 |
Missing | 0 (0.0) | 1 (0.5) | 0 (0.0) | 1 (0.8) | NC | NC |
Infant birthweight | ||||||
<2500 g | 21 (10.8) | 24 (12.2) | 15 (10.1) | 9 (7.5) | 71.4 | 37.5 |
≥2500 g | 172 (88.2) | 170 (86.3) | 132 (89.2) | 109 (90.8) | 76.7 | 64.1 |
Missing | 2 (1.0) | 3 (1.5) | 1 (0.7) | 2 (1.7) | NC | NC |