Table S1.

Treatment characteristics (N=52)

	Statistics
Calcium type, n (%)a
Calcium carbonate	24 (47.1)
Calcium citrate	24 (46.2)
Calcium gluconate	0 (0)
Other	12 (23.5)
Do not know	0 (0)
Vitamin D type, n (%)a
Over the counter	10 (19.2)
Ergocalciferol	3 (5.9)
Calcitriol	45 (86.5)
Other	6 (11.8)
Do not know	0 (0)
Over the past 6 months have you taken additional calcium/vitamin D due to symptoms? n (%)
Yes	42 (80.8)
No	10 (19.2)
Have you had a blood test of your calcium level in the past year? n (%)
Yes	51 (98.1)
Number of blood tests: mean (SD), median, min-max	8.6 (13.0), 4.0, 1–60
No	1 (1.9)
Was your most recent blood calcium level within normal range, n (%)b
Yes	29 (55.8)
No	23 (44.2)
Have you had a urine test of your calcium level in the past year? n (%)
Yes	25 (48.1)
Number of urine tests: mean (SD), median, min-max	1.7 (1.5), 1.0, 0–6
No	27 (51.9)
Was your most recent urine calcium level within normal range, n (%)c
Yes	18 (34.6)
No	16 (30.8)
Not applicable	18 (34.6)

Notes: Percent calculated from non-missing responses.

^aPercentages may not total 100 because patients checked all options that applied.

^bThe most recent blood calcium level may or may not have been measured in the past year.

^cThe most recent urine calcium level may or may not have been measured in the past year.