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Table 1 Demographic characteristics and pregnancy outcomes of the 461 women included in the analysis

From: Relationship between body mass index and mean arterial pressure in normotensive and chronic hypertensive pregnant women: a prospective, longitudinal study

     Normotensive Hypertensive BMI (kg/m2)  
  n (%) p-value* n = 429 n = 32 p-value** 16–24 25–29 30–50 p-value***
Age years [years (%)] 16–24 102 (22 %) <0.001 102 (24 %) 0 <0.001 66 (26 %) 20 (17 %) 16 (18 %) 0.047
25–35 303 (66 %) 285 (66 %) 18 (56 %) 164 (65 %) 78 (66 %) 61 (67 %)
36–43 56 (12 %) 42 (10 %) 14 (44 %) 22 (9 %) 20 (17 %) 14 (15 %)
Parity [n (%)] 0 238 (52 %) 0.485 226 (53 %) 12 (38 %) 0.140 135 (54 %) 54 (46 %) 49 (54 %) 0.335
≥1 223 (48 %) 203 (47 %) 20 (62 %) 117 (46 %) 64 (54 %) 42 (46 %)
Gestational age at delivery, weeks [mean (SD)] 39.22 (1.20) - NA 39.24 (1.17) 38.93 (1.68) 0.308 39.21 (1.18) 39.20 (1.28) 39.25 (1.22) 0.960
Foetal sex [n (%)] Female 245 (53 %) 0.177 229 (53 %) 16 (50 %) 0.852 129 (51 %) 62 (53 %) 54 (59 %) 0.405
Male 216 (47 %) 200 (47 %) 16 (50 %) 123 (49 %) 56 (47 %) 37 (41 %)
Birth weight at delivery, g [mean (SD)] 3128 (334) - NA 3136 (329) 3007 (379) 0.070 3116 (350) 3167 (321) 3108 (301) 0.042
Apgar Score Index at 5′ <7 0 NA 0 (0 %) 0 (0 %) <0.001 0 0 0 <0.001
7–10 461 (100 %) 429 (100 %) 32 (100 %) 252 (100 %) 118 (100 %) 91 (100 %)
  1. BMI body mass index, SD standard deviation
  2. *p - tested equality of population frequencies amongst the different categories of a variable
  3. **p - tested homogeneity of the proportions between HT (hypertensive) and NT (normotensive)
  4. ***p - tested homogeneity of the proportions between normal weight, overweight and obese