TABLE 1.

The early C-peptide (ng/ml) response (30–0 minutes) according to the sequence of NLOGTT and DYSOGTT pairs before diagnosis

	NL→DYSGLY (n = 146)		DYSGLY→NL (n = 70)		SYNCH (n = 98)**
	NLOGTT	DYSOGTT	NLOGTT	DYSOGTT	NLOGTT	DYSOGTT
30–0 minutes*	2.45 ± 1.25	2.01 ± 1.64†	1.96 ± 1.11	2.25 ± 2.00	2.24 ± 1.38	2.27 ± 1.87
Years to diabetes*	2.97 ± 1.32	0.63 ± 0.45	1.31 ± 0.81	2.90 ± 1.22	1.66 ± 0.83	1.72 ± 0.97

*Data are mean ± SD.

**OGTTs synchronized (SYNCH) to the time before diagnosis.

†P < 0.001 vs. NLOGTT.