Table 4.

Prescription of medications that affect urinary stone recurrence during the first year after incident stone diagnosis, among patients who completed at least one 24-h urine test, by subspecialty clinic visits within 6 mo of 24-h urine test

Clinic Visit TypeTotal Patients with 24-h Urine Tests (n=17,303)Thiazide PrescriptionsAlkali PrescriptionsAllopurinol Prescriptionsa
24-h Urine Calcium >200 mg/d (n=5292)24-h Urine Citrate ≤400 mg/d (n=5433)24-h Urine Uric Acid >800 mg/d (n=601)
Participants with Clinic Visit within 6 mo of 24-h Urine Test (N, %)Participants Receiving Medication during First Year after Diagnosis (N, %)Difference from Baseline in Proportion of Participants Receiving Medication (%)Participants Receiving Medication during First Year after Diagnosis (N, %)Difference from Baseline in Proportion of Participants Receiving Medication (%)Participants Receiving Medication during First Year after Diagnosis (N, %)Difference from Baseline in Proportion of Participants Receiving Medication (%)
Urology9927 (57%)834 (26%)111044 (34%)28133 (7%)4
Nephrology1887 (11%)171 (37%)17366 (48%)3554 (15%)5b
Both1870 (11%)214 (42%)24435 (54%)4053 (12%)6
Neither3619 (21%)243 (21%)4154 (19%)1340 (8%)3
  • All P values were significant at <0.001 except where marked.

  • a Excluding patients with gout.

  • b P value 0.16.