Table 2.

Association between quartiles of Hb with DPN in different groups of T2DM patients.

Hb (g/L)	All T2DM (n = 1511)	P value	Male T2DM (n = 743)	P value	Female T2DM (n = 768)	P value
Per SD decrease	1.501 (1.422–1.570)	<0.001	1.618 (1.527–1.691)	<0.001	1.388 (1.257–1.495)	<0.001
Quartiles of Hb
Q1	8.820 (4.932–15.774)	<0.001	35.289 (10.846–114.818)	<0.001	2.665 (1.490–4.767)	0.001
Q2	5.003 (2.762–9.065)	<0.001	14.3 (4.399–46.483)	<0.001	1.440 (0.795–2.609)	0.228
Q3	2.475 (1.311–4.672)	0.005	3.56 (0.976–12.988)	0.001	0.903 (0.437–1.867)	0.784
Q4	1 (reference)		1 (reference)		1 (reference)
Q1, Q2, Q3 versus Q4	1.978 (1.703–2.298)	<0.001	3.246 (2.497–4.219)	<0.001	1.552 (1.275–1.890)	<0.001

Hb: hemoglobin; SD: standard deviation; Q: quartile.