Table 3.

Number of opioid doses prescribed to pediatric patients who received opioids before intervention and at 1 year after intervention.

	PreAdjusted Mean(95% CI)	1 YearAdjusted Mean(95% CI)	Adjusted Ratio(95% CI)	P Value	Ref. [2]
Site 1	19.35 (12.71–29.45)	10.05 (6.85–14.75)	0.52 (0.35–0.76)	0.004	0.70
Site 2 *	12 *	NA	NA	–	–
Site 3	10.68 (6.89–16.54)	25.09 (15.11–41.66)	2.35 (1.42–3.90)	0.02	0.76
Site 4	2.23 (0.77–6.44)	1.71 (0.95–3.05)	0.76 (0.43–1.37)	0.4	0.75
Site 5	20.90 (14.92–29.28)	9.74 (6.60–14.37)	0.47 (0.32–0.69)	<0.001	0.70
Site 6 *	9.25 *	NA	NA	–	–
Site 7	13.06 (10.52–16.21)	15.42 (11.45–20.75)	1.18 (0.88–1.59)	0.28	0.75
Site 8	8.89 (5.36–14.73)	5.90 (2.97–11.72)	0.66 (0.33–1.32)	0.25	0.70
Site 9	12.89 (7.32–22.71)	10.43 (4.85–22.44)	0.81 (0.38–1.74)	0.58	0.75
Overall	12.23 (9.61–15.36)	8.19 (6.83–9.83)	0.67 (0.56–0.80)	<0.001	0.27

^*Adjusted means not estimable owing to either zero or 100% of patients receiving opioids in one of groups, here the mean was used instead.