Study of factors influencing susceptibility and age at onset of type 1 diabetes: A review of data from Continental Italy and Sardinia

Table 4 Maternal age (year) at conception and age at onset of diabetes

		Age at onset of diabetes (yr)			t test for differences between means
		mean	SE	total n
Sardinia	Maternal age ≤ 32	5.75	0.89	20
	Maternal age > 32	7.54	0.31	169	P = 0.062
Continental Italy	Maternal age ≤ 32	8.02	0.51	61
	Maternal age > 32	7.89	0.81	28	P = 0.894

Age at onset; Sardinia vs Continental Italy. t test for differences between means. Maternal age > 32, P = 0.720; Maternal age ≤ 32, P = 0.028.