01 July 2020 : Clinical Research
A Retrospective Case-Control Study of the Determinants of Iron Deficiency Anemia in Infants in an Urban Community in Shanghai, China Between 2010–2015
Jian Wang1ADEF*, Yuan Liu2DEF, Qi Zhao3CD, Tianwei Liu4B, Zhigang Zhou4BDOI: 10.12659/MSM.921463
Med Sci Monit 2020; 26:e921463
Table 1 The clinical and demographic characteristics of the infants with iron deficiency anemia (IDA) and the matched control group in an urban community in Shanghai, China between 2010–2015.
| Determinant | IDA group | Control group | P-value |
|---|---|---|---|
| Maternal age at delivery (years) | 30.460±3.348 | 30.160±3.359 | 0.377 |
| Birth weight (gm) | 3228.720±456.200 | 3376.870±393.719 | 0.005 |
| Birth height (cm) | 49.519±3.1721 | 49.990±0.919 | 0.078 |
| Duration of exclusive breastfeeding (months) | 10.603±4.844 | 7.080±5.039 | <0.001 |
| Start of complementary feeding (months) | 7.320±1.633 | 6.930±1.794 | 0.041 |
| Maternal age at delivery (years) | |||
| <30 | 58 (39.46) | 65 (44.22) | 0.435 |
| ≥30 | 89 (60.54) | 82 (55.78) | |
| Mode of delivery | |||
| Natural labor | 66 (44.00) | 63 (42.00) | 0.824 |
| Cesarean birth | 84 (56.00) | 87 (58.00) | |
| Premature birth | |||
| Yes | 16 (10.67) | 2 (1.33) | <0.001 |
| No | 134 (89.33) | 148 (98.67) | |
| First delivery | |||
| Yes | 119 (79.33) | 129 (86.00) | 0.174 |
| No | 31 (20.67) | 21 (14.00) | |
| Mode of feeding within 4 months after birth | |||
| Breastfeeding | 127 (85.23) | 80 (53.69) | <0.001 |
| Mixed feeding | 17 (11.41) | 49 (32.89) | |
| Formula feeding | 5 (3.36) | 20 (13.42) | |
| Duration of exclusive breastfeeding (months) | |||
| <4 | 8 (5.37) | 40 (26.85) | <0.001 |
| ≥4 | 141 (94.63) | 109 (73.15) | |
| Start of complementary feeding (months) | |||
| ≤6 | 74 (49.66) | 93 (62.42) | 0.027 |
| >6 | 75 (50.34) | 56 (37.58) | |