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Table 1 Studied population characteristics

From: Postoperative hypocalcemia: analysis of factors influencing early hypocalcemia development following thyroid surgery

Variable

Total n. Of patients (2108)

Sex

 Female

1669 (79.2%)

 Male

439 (20.8%)

Age (y)

 Mean ± sd

54.6 (± 13,85)

 Range

15–87

Age groups

  < 40

309 (14.7%)

 40–50[

439 (20.8%)

 50–60[

547 (26%)

  > 60

812 (38.5%)

Post-menopausal age (tot.1669)

 Yes

1054 (63.2%)

 No

615 (36.8%)

Preoperative diagnosis

 Malignant

824 (39.1%)

 Benign

1284 (60.9%)

Hyperthyroidism

 Yes

382 (18.1%)

 No

1726 (81.9%)

Thyroiditis

 Yes

727 (34.5%)

 No

1381 (65.5%)

Diabetes

 Yes

181 (8.6%)

 No

1927 (91.4%)

Hypertension

 Yes

601 (28.5%)

 No

1507 (71.5%)

Definitive histological diagnosis (tot. 1914)

 Malignant

667 (34.8%)

 Benign

1247 (65.2%)

Surgical procedure

 Total thyroidectomy

2014 (95.5%)

 Lobectomy

94 (0.5%)

Total number of parathyroid glands identified during operation (tot. 1202)

 0

16 (1.3%)

 1

68 (5.7%)

 2

389 (32.4%)

 3

656 (54.6%)

 4

73 (6.1%)

Calcium drop from preoperative to postoperative (24 h)

 Mean ± sd

1.203 (± 0.41) mg/dl

Postoperative early hypocalcemia (ca < 8.0 mg /dl)

 Yes

795 (37.7%)

 No

1313 (62.3%)