Table 2.
Iron intake at mid-pregnancy according to intake of supplements and total iron intake levels at mid-pregnancy1
| |
All subjects (n = 337) |
Supplement users (n = 97) |
Non-supplement users (n = 240) |
|||
|---|---|---|---|---|---|---|
| n (%) | Mean ± SD | n (%) | Mean ± SD | n (%) | Mean ± SD | |
| Food,3 mg |
|
12.5 ± 3.9 |
|
13.0 ± 3.9 |
|
12.4 ± 3.8 |
| Supplements,4 mg |
|
18.4 ± 38.8 |
|
63.8 ± 48.3 |
|
- |
| Total iron intake5, mg |
|
30.9 ± 39.2 |
|
76.9 ± 48.5a2 |
|
12.4 ± 3.8b |
| < 24 |
256 (76.0) |
12.6 ± 3.9 |
18 (18.6) |
17.9 ± 4.12a |
238 (99.2) |
12.2 ± 3.6b |
| 24 ~ < 45 |
18 (5.3) |
33.9 ± 6.2 |
16 (16.5) |
34.8 ± 5.9a |
2 (0.8) |
26.8 ± 3.5a |
| ≥ 45 |
63 (18.7) |
104.4 ± 37.4 |
63 (64.9) |
104.4 ± 37.4 |
0 |
|
| 1st tertile (< 11.49) |
112 (33.3) |
9.3 ± 1.7 |
1 (1.0) |
- |
111 (46.3) |
9.2 ± 1.7 |
| 2nd tertile (11.49 ~ 17.04) |
113 (33.5) |
14.0 ± 1.6 |
8 (8.3) |
15.1 ± 1.7a |
105 (43.8) |
13.9 ± 1.5b |
| 3rd tertile (>17.04) | 112 (33.2) | 69.7 ± 48.7 | 88 (90.7) | 83.2 ± 46.4a | 24 (10.0) | 20.2 ± 3.0b |
1 Values are mean ± SD or n (%).
2 Significantly different by student’s t-test; Values with different superscript letters within a row are significantly different between supplement uses and non-supplement users (P < 0.05).
3 Iron intake from food sources only.
4 Iron intake from supplement sources only.
5 Total iron intake from both food and supplement sources.