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Table 1 Features of Female Patients With Hypothyroidism (N = 99)

From: Primary hypothyroidism and chronotypes in adult women

Feature

No

%

Age, y

 22–59

54

54.5

 60–65

45

45.4

BMI

 18.5–25 (Normal)

17

17.2

 25.1–30 (Overweight)

42

42.4

 > 30 (Obese)

40

40.4

Thyrotropin, mIU/L

 < 0.27

14

14.1

 0.27–4.20

73

73.7

 > 4.20

12

12.1

Diabetes

 Yes

23

23.2

 No

76

76.8

Hemoglobin A1c (n = 23)

 ≤ 7%

10

43.5

 > 7%

13

56.6

Levothyroxine dose, mcg

 < 50

3

3

 50–100

62

62.6

 > 100

34

34.3

Workdays per week, no.

 0–2

15

15.2

 3–5

41

41.4

 > 5

43

43.4

Cigarette smoking

 Yes

6

6.1

 No

93

93.9

Alcohol intake

 Yes

17

17.2

 No

82

82.8

Coffee intake, no. of cups daily

 0

16

16.2

 1–3

53

53.5

 > 3

30

30.3

Sleep medication (weekly)

 Yes

26

26.3

 No

73

73.7

Chronotype (reported)

 Early

63

63.6

 Intermediate

24

24.2

 Late

12

12.1

 

Median

Interquartile ranges

Workdays: time of going to bed

10:45 PM

(9PM–11PM)

Workdays: sleep latency, min

40

(5–90)

Workdays: sleep end

6:30 AM

(5:30AM–7AM)

Workdays: sleep inertia, min

5

(3–15)

Workdays: light exposure, min

30

(10–120)

Work-free days: time of going to bed

10:30 PM

(8PM–10:30PM)

Work-free days: sleep latency, min

30

(5–90)

Work-free days: sleep end

7:05 AM

(6AM–8AM)

Work-free days: sleep inertia, min

5

(3–15)

Work-free days: light exposure, min

30

(10–120)

  1. BMI body mass index (calculated as weight in kilograms divided by height in meters squared)