Table 2.

Patient characteristics (N = 5552)

	Number (N)	Percent (%)	95% CI
Sex (male)	2602	46.9	45.5–48.2
Age
≤ 30	327	5.9	5.3–6.5
> 30–50	1876	33.8	32.5–35.0
> 50–80	3237	58.3	57.0–59.6
> 80	112	2.0	1.7–2.4
Pregnant women	8	0.1	0.04–0.2
BMI > 30	1825	32.8	31.6–34.1
Thyroid medication	638	11.5	10.6–12.3
CCI
0	3049	54.9	53.6–56-2
1	1390	25.0	23.9–26.2
2–5	1038	18.7	17.7–19.7
6–12	36	0.7	0.4–0.9
SHIP diagnosisa, c
Goitre	1815	32.7	31.5–33.9
Hyperthyroidism	510	9.2	8.4–9.9
Hypothyroidism	611	11.1	10.2–11.8
Thyroid nodule	2197	39.6	38.3–40.9
Thyroiditis	234	4.2	3.7–4.7
Billing diagnosisb, c
Goitre	1057	19.0	18.0–20.1
Hyperthyroidism	230	4.1	3.6–4.7
Hypothyroidism	320	5.8	5.2–6.4
Thyroid nodule	500	9.0	8.2–9.8
Thyroiditis	166	2.99	2.5–3.4

^aclinical findings based on ultrasound or laboratory testing in SHIP, regardless of billing diagnosis

^bcoded thyroid disorder in billing data, regardless of SHIP findings

^cone patient can have more than one diagnosis