. 2023 Mar 24;6(3):e234584. doi: 10.1001/jamanetworkopen.2023.4584

Table 2. Hydroxyurea Use Before and After New Treatment Guidelines.

Measure	Days’ supply hydroxyurea, No. (N = 12 565 person-y)
	Michigan (n = 2914 person-y)			New York (n = 9651 person-y)
	Before release (n = 1472 person-y)^a	After release (n= 1443 person-y)^a	Before release (n = 3718 person-y)^a		After release (n = 5933 person-y)^a
Minimum	0	0	0		0
Quartile 1	0	0	0		0
Median	0	0	0		0
Quartile 3	0	60	148		240
Mean (SD)^b	41.73 (89.88)	52.73 (97.04)	79.78 (125.32)		108.37 (142.77)

^{^a}

The prerelease period was 2010 to 2014 for Michigan and 2012 to 2014 for New York, and the postrelease period was 2015 to 2018.

^{^b}

Rankings were compared using Wilcoxon test. P < .001 for before vs after release in Michigan and New York.