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Table 3 Comparison of baseline characteristics and maternal outcomes of controlled and uncontrolled hypothyroid patients before conception

From: Maternal characteristics and outcomes affected by hypothyroidism during pregnancy (maternal hypothyroidism on pregnancy outcomes, MHPO-1)

CLINICAL CHARACTERISTICS

TSH PRECONCEPTION

P -value

 

Controlled (up to 2.5 mIU/L) N = 170

Uncontrolled (greater than 2.5 mIU/L) N = 207

 

N (%)

N (%)

Age (years)

 18–25

15 (3.98)

16 (4.24)

0.43a

 26–33

104 (27.59)

117 (31.03)

 34–40

50 (13.26)

69 (18.30)

 41–47

1 (0.27)

5 (1.33)

Parity

 Nulliparous

42 (11.29)

54 (14.52)

0.8

 Multiparous

125 (33.60)

151 (40.59)

Body Mass Index (Kg/m2)

 Underweight (< 18.5)

7 (2.06)

6 (1.77)

0.2

 Normal (18.5–24.9)

45 (13.27)

54 (15.93)

 Overweight (25–29.9)

56 (16.52)

60 (17.70)

 Obesity class I (30–34.9)

31 (9.14)

57 (16.81)

 Obesity class II and above (> = 35)

13 (3.83)

10 (2.95)

Etiology of Hypothyroidism

 Autoimmune

163 (43.35)

199 (52.93)

0.7

 Post treatment$

7 (1.86)

7 (1.86)

Thyroid antibodies

 Positive

54 (36.99)

60 (41.10)

0.7

 Negative

14 (9.59)

18 (12.33)

COMORBIDITIES

 Diabetes Mellitus

  Yes

10 (2.65)

18 (4.77)

0.3

  No

160 (42.44)

189 (50.13)

 Gestational diabetes mellitus

  Yes

38 (10.08)

44 (11.67)

 

  No

132 (35.01)

163 (43.24)

0.8

 Hypertension

  Normotensive

151 (40.05)

176 (46.68)

 

  Previous Gestational Hypertension/Chronic Hypertension

19 (5.04)

31 (8.22)

0.3

MATERNAL OUTCOMES

 Mode of labor (for live births only)

  Spontaneous

29 (14.50)

37 (18.50)

0.24

  Induced

45 (22.50)

 

  Augmented

27 (13.50)

44 (22.00)

  Not applicable due to Caesarean section

 

18 (9.00)

 Mode of delivery (for live births only)

  LSCS

80 (23.19)

124 (35.94)

0.012

  Instrumental

7 (2.03)

6 (1.74)

  SVD

71 (20.58)

57 (16.52)

 Pregnancy outcomes

  Abortion

12 (3.18)

15 (3.98)

0.9a

  Live Birth (Twins/Triplets)

157 (41.64)

187 (49.60)

  Ectopic

0 (0.00)

1 (0.27)

  Termination of Pregnancy

0 (0.00)

1 (0.27)

  Intrauterine Death/Stillbirth

1 (0.27)

3 (0.80)

 Gestational Hypertension

  Yes

13 (7.6)

21 (10.1)

0.4

  No

157 (92.4)

186 (89.9)

 Pre-Eclampsia

  Yes

2 (1.2)

8 (3.9)

0.19a

  No

168 (98.8)

199 (96.1)

 Postpartum Hemorrhage

  Yes

56 (32.9)

95 (45.9)

0.01

  No

114 (67.1)

112 (54.1)

  1. aFischer’s Exact
  2. $Post medical treatment for Grave’s disease, Post-Radioactive Iodine Ablation and Post-Surgical
  3. LSCS Lower segment Caesarean section. SVD Spontaneous vaginal delivery