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Table 6 Inclusion thresholds for theoretical trial and association with practice setting and FRANZCOG Duration

From: The use of intravenous iron in pregnancy: for whom and when? A survey of Australian and New Zealand obstetricians

Thresholds deemed appropriate Frequency (n)a and percentage (%) Practice setting (n)a and percentage (%) p-value Time since obtaining FRANZCOG (n) and percentage (%) p-value
Public Not public < 10 years > 10 years
IDAP
 Any Hb Yes 114 (26.6) 79 (69.9) 34 (30.1) 0.038C* 50 (43.9) 64 (56.1) 0.243C
No 314 (73.4) 248 (79.5) 64 (20.5)   117 (37.6) 194 (62.4)  
 Hb < 100 g/L Yes 232 (54.2) 177 (77.0) 53 (23.0) 0.993C 97 (42.0) 134 (58.0) 0.214C
No 196 (45.8) 150 (76.9) 45 (23.1)   70 (36.1) 124 (63.9)  
 Hb < 90 g/L Yes 155 (36.2) 116 (75.8) 37 (24.2) 0.680C 57 (36.8) 98 (63.2) 0.420C
No 273 (63.8) 211 (77.6) 61 (22.2)   110 (40.7) 160 (59.3)  
 Hb < 80 g/L Yes 140 (32.7) 105 (76.1) 33 (23.9) 0.772C 51 (36.3) 89 (63.6) 0.397C
No 288 (67.3) 222 (77.4) 65 (22.6)   116 (40.7) 169 (59.3)  
 Any Hb in special circumstancesb Yes 202 (47.2) 158 (78.6) 43 (21.4) 0.440C 78 (38.3) 123 (61.2) 0.845C
No 226 (52.8) 169 (75.4) 55 (24.6)   89 (39.7) 135 (60.3)  
ID without anaemia
 Ferritin < 30 μg/L Yes 42 (9.8) 29 (69.0) 13 (31.0) 0.201C 20 (47.6) 22 (52.4) 0.245C
No 386 (90.2) 298 (77.8) 85 (22.2)   147 (38.4) 236 (61.6)  
 Ferritin < 15 μg/L Yes 151 (35.3) 116 (76.8) 35 (23.2) 0.965C 55 (36.7) 95 (63.3) 0.413C
No 277 (64.7) 211 (77.0) 63 (23.0)   112 (40.7) 163 (59.3)  
Trial not an option Yes 45 (10.5) 34 (77.3) 10 (22.7) 0.956C 9 (20.9) 34 (79.1) 0.009C**
No 383 (89.5) 293 (76.9) 88 (23.1)   158 (41.4) 224 (58.6)  
Other Yes 20 (4.7) 16 (80.0) 4 (20.0) 1.000F 5 (25.0) 15 (75.0) 0.180C
No 408 (95.3) 311 (76.8) 94 (23.2)   162 (40.0) 243 (60.0)  
  1. Abbreviations: FRANZCOG Fellowship of Royal Australian and New Zealand College of Obstetricians and Gynaecologists; IDAP iron deficiency anaemia in pregnancy; ID iron deficiency; Hb haemoglobin. Superscript: F, Fisher’s Exact; C, Pearson’s Chi-Squared
  2. a“Public” represents clinicians whose practice sites include metropolitan public and/or non-metropolitan public hospitals; “not public” includes clinicians who practice exclusively in metropolitan private hospitals, non-metropolitan private hospitals or others
  3. bExamples of special circumstances specified included late in pregnancy, Jehovah’s witness, known prior oral iron intolerance