. 2019 Nov 6;155(2):106–112. doi: 10.1001/jamasurg.2019.4613

Table 2. Primary and Secondary Outcomes.

Characteristic	No. (%) [95% CI]		P Value
Characteristic	Near Infrared–Induced Autofluorescence (n = 121)	Standard Care (n = 120)	P Value
Primary outcome
Postoperative hypocalcemia at postoperative day 1 or 2	11 (9.1) [4.0-14.2]	26 (21.7) [14.3-29.0]	.007^a
Secondary outcomes
Nadir of postoperative corrected calcium, median (IQR), mg/dL	8.86 (8.62-9.18)	8.74 (8.25-9.03)	.025^b
Parathyroid hormone at postoperative day 1, median (IQR), pg/mL	33.2 (21.9-48.1)	28.6 (12.0-46.5)	.07^b
Supplementation
Calcium only	11 (9.1) [4.0-14.2]	24 (20.0) [12.8-27.2]	.016^a
Calcium and vitamin D	6 (5.0) [1.1-8.9]	8 (6.7) [2.9-12.8]	.78^c
Identified parathyroid glands, No.
0	1 (0.8) [0.0-2.5]	2 (1.7) [0.0-4.0]	<.001^a
1	2 (1.7) [0.0-4]	19 (15.8) [9.3-22.4]
2	20 (16.5) [10.0-23.3]	40 (33.3) [24.9-41.8]
3	40 (33.1) [24.9-41.8]	36 (30.0) [21.8-38.2]
4	57 (47.1) [38.5-56.4]	23 (19.2) [12.1-26.2]
Not determined	1 (0.8) [0-2.5]	NA
Inadvertently resected parathyroid glands, No.	3 (2.5) [0-5.2]	14 (11.7) [5.9-17.4]	.006^c
Autotransplanted parathyroid glands, No.
0	116 (95.9) [93.5-99.9]	104 (86.7) [80.6-92.8]	.009^a
≥1	4 (3.3) [0.1-6.6]	16 (13.3) [7.3-19.4]	.009^a
Not determined	1 (0.8) [0.0-2.5]
Permanent hypocalcemia	0	2 (1.7) [0.0-4.0]	.15^c
Nonparathyroid complication	3 (2.5) [0.0-5.3]	3 (2.5) [0.0-5.3]	>.99^c
Duration of hospitalization, median (IQR), d	3 (3.0-4.0)	3.0 (3.0-4.0)	.98^b

Abbreviations: IQR, interquartile range; NA, not applicable.

SI conversion factor: To convert calcium to mmol/L, multiply by 0.25; to convert parathyroid hormone to ng/L, multiply by 1.

^{^a}

χ² Test applied.

^{^b}

Wilcoxon test applied.

^{^c}

Fisher test applied.