Table 2.

Sensitivity analysis across varying lag and SD parameters of the percentage of days identified as spikes in drug overdose deaths in Massachusetts, 2017 through 2023

	Total days identified as spikes by lag, %
SD	7 d	15 d	30 d	60 d	90 d	120 d	150 d	180 d
2.0	18.4	11.4	9.1	6.9	7.0	6.4	6.3	6.8
2.1	15.9	9.2	6.9	5.5	5.8	5.5	5.6	5.6
2.2	12.8	7.7	5.9	4.5	4.6	4.2	4.6	4.2
2.3	10.5	6.3	4.5	4.0	3.4	3.1	2.9	3.0
2.4	8.8	5.5	4.1	2.9	2.5	2.5	2.5	2.5
2.5	6.7	4.9	2.5	2.4	2.2	2.1	2.0	2.3
2.6	5.8	3.8	2.0	2.0	1.8	1.6	1.4	1.4
2.7	4.5	3.3	1.5	1.8	1.5	1.4	1.2	1.1
2.8	4.2	2.7	1.2	1.2	1.3	1.1	1.1	1.0
2.9	4.1	1.8	0.9	0.7	0.9	0.8	0.7	0.7
3.0	3.7	1.3	0.8	0.7	0.5	0.6	0.6	0.5