Table 2:

Difference in mean total costs of all services and wards used by pregnant women with type 1 diabetes and their infants during the CONCEPTT trial

Analysis^*	Province	CGM n = 100 mother/infant dyads		SMBG n = 102 mother/infant dyads		Difference between CGM and SMBG

		Mean, $	SEM, $	Mean, $	SEM, $	Mean, $	SEM, $	95% CI^†, $
Primary outcome: total costs excluding glucose monitoring	Ontario	13 270.25	1122.61	18 465.21	1758.01	−5194.96	2112.07	−9841 to −1395

	British Columbia	13 480.57	1154.21	18 762.17	1786.67	−5281.60	2154.34	−9964 to −1382

	Alberta	13 294.39	1141.15	18 674.45	1808.81	−5380.06	2165.35	−10 216 to −1490

Secondary outcome: total costs including glucose monitoring	Ontario	17 881.01	1107.80	19 699.65	1752.10	−1818.64	2099.14	−6424 to 1942

	British Columbia	18 091.32	1139.41	19 996.61	1780.73	−1905.29	2141.33	−6588 to 1957

	Alberta	17 905.15	1126.42	19 908.89	1802.87	−2003.74	2152.47	−6747 to 1844

Ad hoc analysis: maximum costs of CGM to be < SMBG costs	Ontario	14 546.61	1118.35	19 699.65	1752.10	−5153.04	2102.01	−9801 to −1372

	British Columbia	14 756.92	1149.96	19 996.61	1780.73	−5239.69	2145.74	−9961 to −1386

	Alberta	14 570.75	1136.89	19 908.89	1802.87	−5338.14	2155.59	−10 152 to −1473

Note: BCA = bias-corrected and accelerated, CGM = continuous glucose monitoring, CI = confidence interval, SEM = standard error of the mean, SMBG = self-monitoring blood glucose.
↵* The primary outcome is the total cost of all services, excluding cost of CGM devices, CGM sensors, glucometers and SMBG strips. The secondary outcome is the total cost of all services, including cost of CGM devices, CGM sensors, glucometers and SMBG strips. The ad hoc analysis estimates the maximum total cost per patient (including cost of CGM devices, CGM sensors, glucometers and SMBG strips) for CGM to remain significantly cheaper than SMBG during type 1 diabetes pregnancy. Negative value favours less costly CGM group.
↵† The 95% CIs were estimated using the BCA method.