. 2009 Nov 13;11(1):77–94. doi: 10.1007/s10198-009-0203-0

Table 6.

Adjusted analyses: estimated marginal means for total costs (€). P-values are based on Wald chi-square statistics and indicate if between-group differences are significant

Year (analysis)	0 (GZLM)		1 (GZLM)		2 (GZLM)		0–1–2 (GEE)
Group	Mean	95% CI^a	Mean	95% CI^a	Mean	95% CI^a	Mean	95% CI^a
Group 1	7,129	4,770 to 9,489	6,029	3,689 to 8,369	4,929	3,156 to 6,702	6,069	4,301 to 7,837
Group 2	4,371	3,180 to 5,563	3,522	2,748 to 4,296	3,792	2,621 to 4,963	3,880	3,145 to 4,614
Group 3	3,532	2,812 to 4,251	3,353	2,782 to 3,924	4,031	3,136 to 4,927	3,691	3,081 to 4,301
Group 1 vs 2 vs 3	P = 0.008		P = 0.083		P = 0.460		P = 0.026
Groups 2 + 3	3,734	3,052 to 4,417	3,391	2,873 to 3,908	3,986	3,165 to 4,808	3,748	3,222 to 4,275
Group 1 minus Group 2	2,758	67 to 5,449	2,507	−220 to 5,234	1,137	−1,082 to 3,356	2,190	199 to 4,181
Group 1 minus Group 2	P = 0.043^b		P = 0.079^b		P = 0.659^b		P = 0.027^b
Group 1 minus Group 3	3,597	775 to 6,490	2,676	−200 to 5,552	897	−1,132 to 2,927	2,378	266 to 4,490
Group 1 minus Group 3	P = 0.007^b		P = 0.078^b		P = 0.659^b		P = 0.021^b
Group 1 minus Groups 2 + 3	3,350	1,112 to 5,588	2,619	298 to 4,939	964	−650 to 2,578	2,338	648 to 4,027
Group 1 minus Groups 2 + 3	P = 0.003		P = 0.027		P = 0.242		P = 0.007

^aWald type 95% confidence interval

^bCorrected for multiple comparisons with the sequential Bonferroni method