Table 4.

Some symptoms and signs at diagnosis, as well as family history of diabetes in relation to C-peptide at diagnosis

		C-peptide, diagnosis
Symptoms/history		Number	Mean	SD	p-value
Polyuria	Yes	3067	0.27	0.21	<0.000
	No	139	0.71	0.51
Polydipsia	Yes	3043	0.26	0.21	<0.000
	No	154	0.70	0.51
Weight loss	Yes	2397	0.25	0.19	<0.000
	No	701	0.42	0.37
pH <7.3	Yes	513	0.18	0.15	<0.000
	No	2606	0.30	0.24
BMI-SDS ≤0	Yes	1872	0.24	0.19	<0.000
	No	1125	0.37	0.32
Other auto	Yes	173	0.32	0.31	n.s
immune disease	No	3268	0.29	0.26
T1D in family	Yes	448	0.37	0.28	<0.000
	No	2993	0.27	0.26
T1D in grandparents	Yes	220	0.34	0.25	0.01
	No	3221	0.29	0.27
T2D in relatives	Yes	1121	0.31	0.27	0.01
	No	2320	0.28	0.27

BMI-SDS, body mass index standard deviation score; T1D, type 1 diabetes; T2D, type 2 diabetes.