Table 3.

T-test analysis on the total lifetime costs before and after adding the unrelated future medical costs (£GBP 2017–2018)

Diabetes type	Variable	Observation	Mean	SE	SD	95% CI		P value (difference <0)	P value (difference != 0)	P value (difference >0)
T1D	Before	16	54,156	8560	34,241	35,911	72,402
	After	16	68,436	8408	33,633	50,514	86,358
	Difference		− 14,280	11,999		− 38,785	10,226	0.12	0.24	0.88
T2D	Before	28	71,511	13,277	70,255	44,269	98,753
	After	28	105,422	13,971	73,930	76,755	134,089
	Difference		− 33,911	19,274		− 72,553	4730	0.04	0.08	0.96

Difference = Before–After

Bolded p-value indicates statistical significance at 0.05 threshold

95% CI 95% confidence interval, SD standard deviation, SE standard error, T1D type 1 diabetes, T2D type 2 diabetes