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Table 1 Baseline characteristics of patients

From: Thyroid hormones and ovarian reserve: a comprehensive study of women seeking infertility care

 

TSH Group 1 (TSH level ≤ 1 mIU/L)

(n = 274)

TSH Group 2 (TSH level 1–2.5 mIU/L)

(n = 791)

TSH Group 3 (TSH level 2.5–4 mIU/L)

(n = 248)

TSH Group 4 (TSH level > 4 mIU/L)

(n = 83)

Age (years)

39 (10)

36 (10)

37 (9)

40 (8)

Infertility type

 -Primary

167 (60%)

476 (60%)

151 (60%)

56 (67%)

 -Secondary

107 (40%)

315 (40%)

97 (40%)

27 (33%)

Gravida

0 (1)

0 (1)

0 (1)

0 (1)

Menstrual cycle

 -Regular

210 (77%)

598 (76%)

190 (77%)

59 (71%)

 -Irregular

64 (23%)

193 (24%)

58 (23%)

24 (29%)

FSH (IU/L)

9.2 (8.83)

10 (12.1)

9.44 (10.85)

10.4 (11.39)

AMH (pmol/L)

3 (7.86)

3.71 (12.64)

5.5 (11.79)

1.71 (6.5)

AFC

5 (7)

5 (10)

6 (10)

4 (4)

  1. Abbreviations: TSH Thyroid-stimulating hormone, FSH Follicle-stimulating hormone, AMH Anti-Müllerian hormone, AFC Antral follicle count. The values shown in the table are given as median (interquartile) for continuous values and absolute frequencies for qualitative parameters
  2. The p-values were derived from the Kruskal–Wallis test and post hoc by the Dunn’s test for constant parameters and the chi-2 test for qualitative parameters. Age differences between the TSH groups 1 and 2, 1 and 3, 2 and 4, 3 and 4 are statistically significant. AMH differences between the TSH groups 1 and 2, 1 and 3, 2 and 4, 3 and 4 are statistically significant. AFC differences between TSH groups 1 and 3, 3 and 4 are statistically significant