Table 5 Results of the linear regression analysis modelling the association between pregnancies and the amount of iron removed by phlebotomies
Variables | Univariable analysis | Multivariable analysis | ||||
|---|---|---|---|---|---|---|
e β | 95% CI | P | e β | 95% CI | P | |
No. of pregnancies | ||||||
0 | 1.00 | 1.00 | ||||
1 or 2 | 1.49 | [0.98–2.26] | 0.061 | 1.41 | [0.99–2.02] | 0.058 |
≥ 3 | 1.51 | [0.99–2.31] | 0.058 | 1.27 | [0.89–1.83] | 0.191 |
Age at diagnosis | ||||||
< 60 y.a | 1.00 | 1.00 | ||||
≥ 60 y. | 1.19 | [0.90–1.56] | 0.214 | 1.11 | [0.86–1.43] | 0.415 |
Body mass index | ||||||
< 25 kg/m2 | 1.00 | |||||
≥ 25 kg/m2 | 0.96 | [0.72–1.27] | 0.766 | – | ||
Alcohol intake | ||||||
Non excessive | 1.00 | 1.00 | ||||
Excessiveb | 2.29 | [1.32–3.97] | 0.004 | 1.32 | [0.80–2.19] | 0.279 |
Menopause | ||||||
No | 1.00 | 1.00 | ||||
Yes | 1.28 | [0.97–1.71] | 0.084 | 0.92 | [0.72–1.19] | 0.530 |
Regular blood donations | ||||||
No | 1.00 | |||||
Yes | 1.01 | [0.76–1.34] | 0.930 | – | ||
Chronic bleedings | ||||||
No | 1.00 | |||||
Yes | 1.01 | [0.50–2.05] | 0.979 | – | ||
Blood transfusions | ||||||
No | 1.00 | |||||
Yes | 0.98 | [0.67–1.43] | 0.924 | – | ||
Baseline ferritin | 1.00 | [1.00–1.00] | < 0.001 | 1.00 | [1.00–1.00] | < 0.001 |