Table 1

Sample characteristics

VariablesHC
(N=184)
PA (N=99)
Total (N=99)PA-ST (n=52)PA-FT (n=47)
Age (years)31.35 (4.20)32.37 (5.44)32.27 (5.87)32.49 (4.99)
Gestational age (weeks)25.46 (9.51)24.81 (9.79)30.66 (5.57)***18.33 (9.41)***
Height (m)1.60 (0.06)1.60 (0.06)1.61 (0.06)1.59 (0.06)
Pregestational weight (kg)54.39 (7.70)53.37 (6.96)54.33 (7.61)52.30 (6.06)
Pregestational BMI (kg/m2)21.17 (2.88)20.71 (2.25)20.81 (2.45)20.60 (2.01)
Systolic pressure (mmHg)109.74 (8.69)111.55 (9.34)111.21 (9.02)111.91 (9.76)
Diastolic pressure (mmHg)69.28 (5.08)69.29 (5.86)67.77 (5.67)70.98 (5.66)*
Parity/primiparity:multiparity125:5964:3533:1931:16
Hb (g/L)122.32 (10.51)106.09 (8.449)***107.90 (8.92)***104.13 (7.51)***
MCV (fL)90.50 (5.77)82.94 (11.26)***88.46 (7.92)76.94 (11.34)***
HCT (%)0.36 (0.03)0.32 (0.03)***0.33 (0.03)***0.32 (0.02)***
  • Mean (SD) or proportion. Independent t-tests or χ2 tests were performed between PA with HC, PA-ST with HC, and PA-FT with HC. There were no differences between PA and HC in age, gestational age, height, pregestational weight, pregestational BMI, parity, systolic pressure and diastolic pressure. PA had significantly decreased Hb, MCV and HCT than HC. BMI was calculated as a person’s weight (kg) divided by the square of the height (m). Haematocrit (%).

  • *P<0.05, ***P<0.001.

  • BMI, body mass index; Hb, haemoglobin; HC, healthy control; MCV, mean corpuscular volume; PA, pregnant patients with anaemia; PA-FT, pregnant patients with anaemia diagnosed in the first trimester; PA-ST, pregnant patients with anaemia diagnosed in the second or third trimester.