Table 4 Comparison of clinicopathological characteristics between non-persistent and persistent poor sleepers.

From: Sleep quality of patients with papillary thyroid carcinoma: a prospective longitudinal study with 5-year follow-up

 

Non-persistent poor sleepera (n = 14)

Persistent poor sleeperb (n = 19)

p-valuec

Age, years

50.2 ± 10.4

44.0 ± 8.7

0.100

Gender

Male

3 (21.4%)

3 (15.8%)

0.464

Female

11 (78.6%)

16 (84.2%)

 

Body mass index, kg/m2

24.1 ± 4.5

26.7 ± 7.5

0.464

Comorbidities

Hypertension

1 (7.1%)

2 (10.5%)

0.464

Diabetes mellitus

1 (7.1%)

1 (5.3%)

0.957

Preoperative PSQI score

8.6 ± 3.2

10.7 ± 2.7

0.022

PSQI score at postoperative 1 month

5.9 ± 1.8

10.7 ± 2.1

 < 0.001

PSQI score at postoperative 4 months

6.0 ± 2.6

9.8 ± 2.6

0.002

PSQI score at postoperative 10 months

5.0 ± 1.5

9.8 ± 2.0

 < 0.001

ESS score at postoperative 10 months

5.1 ± 5.0

7.3 ± 3.5

0.682

SSS score at postoperative 10 months

1.9 ± 0.6

2.3 ± 0.7

0.166

Preoperative TSH, uIU/mL

2.7 ± 1.4

2.3 ± 1.1

0.421

Extent of surgery

Lobectomy

5 (35.7%)

10 (52.6%)

0.630

Total thyroidectomy

9 (64.3%)

9 (47.4%)

 

Tumor size, cm

1.0 ± 0.6

1.2 ± 0.9

0.274

 ≤ 1.0 cm

10 (71.4%)

11 (57.9%)

0.401

 > 1.0 cm

4 (28.6%)

8 (42.1%)

 

Nodal stage

N0

7 (50.0%)

11 (57.9%)

0.901

N1a

5 (35.7%)

6 (31.6%)

 

N1b

2 (14.3%)

2 (10.5%)

 
  1. PSQI Pittsburgh sleep quality index, ESS Epworth sleepiness scale, SSS Stanford sleepiness scale, TSH thyroid stimulating hormone.
  2. aNon-persistent poor sleeper was defined as a patient who had a PSQI score of 7 or less at postoperative 10 months.
  3. bPersistent poor sleeper was defined as a patient who had a PSQI score greater than 7 at postoperative 10 months.
  4. cp-values from the Mann–Whitney U test between non-persistent and persistent poor sleepers.
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