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Table 3 6 subgroup reference intervals for TSH

From: Accurate interpretation of thyroid dysfunction during pregnancy: should we continue to use published guidelines instead of population-based gestation-specific reference intervals for the thyroid-stimulating hormone (TSH)?

Subgroup*

N

Median

Min-max

Lower limit

Upper limit

Lower 90% CI

Upper 90% CI

P value*

T1a

242

1.35

0.14-5.65

0.34

3.74

0.28-0.41

3.40-4.11

 

T1b

448

1.13

0.015-4.47

0.12

2.97

0.08-0.16

2.78-3.16

0.000*

T2a

432

1.51

0.16-4.07

0.48

3.00

0.42-0.54

2.85-3.15

0.000*

T2b

233

1.61

0.32-3.92

0.68

3.02

0.60-0.77

2.84-3.20

0.009*

T3a

220

1.53

0.37-4.52

0.65

3.17

0.59-0.73

2.91-3.44

0.187

T3b

145

1.7

0.54-4.13

0.82

3.20

0.72-0.92

2.95-3.47

0.008*

  1. *As a result of different number of outliers excluded in each subgroup, net sample size was slightly different for each trimester and subgroup
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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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