TABLE 1

Effective Half-Life and Total Length of Stay According to Different Variables

Variable	n	%	Effective half-life (h)		Total length of stay (h)
Variable	n	%	Mean	SD	Mean	SD
Sex
Female	149	73.04	12.49	3.24	14.28	4.92
Male	55	26.96	12.94	3.41	17.80	6.17
Age (y)
<20	1	0.49	13.45	0.00	15.11	0.00
20–39	77	37.75	12.86	3.31	15.05	5.26
40–64	114	55.88	12.34	3.27	15.46	5.84
≥65	12	5.88	13.52	3.35	14.22	3.82
BMI
Underweight	2	0.98	11.74	1.43	13.43	1.58
Normal	63	30.88	12.12	3.18	15.11	15.11
Overweight	98	48.04	12.71	3.55	15.56	15.56
Obese	41	20.10	13.19	2.75	14.72	14.72
Activity (MBq)
3,700	138	67.65	12.11	2.66	11.99	1.63
5,550	51	25.00	13.66	4.03	19.91	1.82
7,400	13	6.37	13.77	4.96	28.19	1.34
9,250	2	0.98	13.49	0.36	35.60	1.89
rhTSH use
No	123	60.78	13.57	3.58	16.73	5.30
Yes	80	39.22	11.13	2.03	12.92	5.00
Ingested-liquid volume (L)
0–2	11	5.39	14.42	2.01	14.11	2.89
2–4	67	32.84	13.15	3.32	16.21	6.43
4–6	77	37.75	12.01	3.43	14.79	5.11
6–8	37	18.14	11.86	2.83	14.46	5.21
8–10	8	3.92	13.53	2.44	16.03	5.04
>10	3	1.47	13.45	2.40	14.32	3.72
Total/mean time	204	100.00	12.61	3.28	15.23	5.50