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Table 2 Frequencies of participants in each IOM category when separated by pre-pregnancy BMI

From: Risk factors for excessive gestational weight gain in a UK population: a biopsychosocial model approach

BMI pre-pregnancy

IOM category

% (n)

Underweight

Inadequate

33.3 (2)

Normal

16.7 (1)

Excessive

50.0 (3)

Normal

Inadequate

15.5 (22)

Normal

39.4 (56)

Excessive

45.1 (64)

Overweight

Inadequate

4.8 (4)

Normal

19.3 (16)

Excessive

75.9 (63)

Obese

Inadequate

31.8 (14)

Normal

13.6 (6)

Excessive

54.5 (24)