Table 1.
Prevalence of IDA at CD diagnosis and after a gluten-free diet (GFD), both in adult and pediatric patients.
| Adults Patients | |||||||
| Study (Year) | Study Location | Study Design | Number of CD Patients | Men N.(%) | Follow-up | CD patients with IDA before the start of a GFD N. (%) | CD patients with IDA after the start of a GFD (%) |
| Kolho et al. (1998) [7] | Finland | Cross-sectional | 8 | 1 (13) | n.a. | 2 (25) | n.a. |
| Akbari et al. (2006) [8] | Iran | Cross-sectional | 27 | 14 (52) | n.a. | 14 (52) | n.a. |
| Bergamaschi et al. (2008) [22] | Italy | Prospective Cohort | 132 | 47 (36) | 12 months | 45 (34) | n.a. |
| Berry et al. (2018) ** [24] | India | Prospective cohort | 103 | 48 (47) | n.a. | 84 (82) | n.a. |
| Binicier et al. (2020) [37] | Turkey | Retrospective Cohort | 195 | 44 (23) | 58 months * | 104 (53) | n.a. |
| Bottaro et al. (1999) [38] | Italy | Cross-sectional | 313 | n.a. | n.a. | 145 (46) | n.a. |
| Abu Daya et al. (2013) [39] | USA | Cross-sectional | 727 | 203 (28) | n.a. | 152 (21) | n.a. |
| Sansotta et al. (2018) [40] | USA | Retrospective Cohort | 327 | n.a. | 24 months * | 157 (48) | (15) |
| De Falco et al. (2018) [42] | Italy | Prospective Cohort | 505 | 106(21) | 12 months | 229 (45) | (21) |
| Pediatric Patients | |||||||
| Study (Year) | Study Location | Study Design | Number of CD Patients | Men N.(%) | Follow-up | CD patients with IDA before the start of a GFD N. (%) | CD patients with IDA after the start of a GFD (%) |
| Bottaro et al. (1999) [38] | Italy | Cross-sectional | 485 | n.a. | n.a. | 169 (35) | n.a. |
| Sansotta et al. (2018) [40] | USA | Retrospective Cohort | 227 | n.a. | 31 months * | 27 (12) | (16) |
| Tolone et al. (2017) [41] | Italy | Cross-sectional | 387 | 152 (39) | 84 months | 134 (35) | n.a. |
Note: N., number; CD, celiac disease; GFD, gluten-free diet; IDA, iron deficiency anemia; n.a., data not available; * mean; and ** age > 12years.