Table 3. The BD/TDD ratio and insulin dose per kilogram of body weight were then analyzed by stratifying the study subject with age, DM duration, BMI, HbA1c, C peptide level, fasting and 2h glucose level on admission and discharged from hospital, and usage of metformin.

Variables		BD/TDD ratio	insulin doses perkilogram of body weight	Total insulin doseper day
Age*	≤53 years	0.24±0.09	0.57±0.21	38.96±14.25
	54–66 years	0.23±0.08	0.59±0.23	39.75±16.14
	≥67 years	0.21±0.08	0.57±0.22	35.90±14.04
DM duration	≤7years	0.22±0.08	0.53±0.21	35.60±13.63
	8–14years	0.23±0.09	0.58±0.22	38.87±14.80
	≥15years	0.23±0.09	0.62±0.23	40.30±15.88
BMI*	<22.2 kg/m2	0.21±0.09	0.63±0.23	34.41±12.33
	22.2–25.8 kg/m2	0.22±0.08	0.56±0.21	36.89±13.66
	≥25.9 kg/m2	0.24±0.09	0.56±0.22	43.40±16.99
HbA1c	≤8.2%	0.22±0.09	0.52±0.20	34.65±13.99
	8.3–10.1%	0.23±0.08	0.60±0.24	40.66±16.14
	≥10.2%	0.24±0.08	0.62±0.21	39.98±13.61
fasting C-peptide	<1.18 ng/dl	0.23±0.08	0.59±0.21	37.42±12.54
	1.18–2.04 ng/dl	0.23±0.08	0.59±0.21	40.32±15.23
	≥2.05 ng/dl	0.22±0.08	0.58±0.23	40.98±16.30
Postprandial C-peptide	<1.89 ng/dl	0.24±0.08	0.62±0.21	38.42±12.91
	1.89–3.48	0.24±0.08	0.61±0.22	41.84±15.13
	≥3.49	0.22±0.07	0.55±0.22	38.87±15.84
FBG (mmol/L) when admission *	<6.95	0.21±0.08	0.53±0.20	35.26±14.07
	6.95–9.39	0.23±0.08	0.59±0.22	39.39±14.41
	≥9.4	0.25±0.08	0.64±0.23	42.66±15.15
2 hrPBG (mmol/L) when admission *	<11.1	0.22±0.09	0.54±0.20	35.98±13.69
	11.1–15	0.23±0.09	0.59±0.23	39.97±16.10
	≥15.1	0.24±0.08	0.63±0.22	41.34±14.43
FBG (mmol/L) Discharged from hospital	<6.4	0.22±0.08	0.55±0.21	36.12±13.18
	6.4–7.5	0.22±0.08	0.51±0.21	38.51±14.32
	≥7.6	0.24±0.09	0.62±0.24	40.55±16.53
2 hrPBG (mmol/L) Discharged from hospital *	<7.8	0.24±0.08	0.58±0.22	37.80±14.03
	7.8–9.2	0.22±0.08	0.57±0.22	38.11±14.02
	≥9.3	0.21±0.08	0.59±0.23	39.43±15.78
Usage of metformin*	Insulin alone	0.22±0.09	0.57±0.23	35.44±14.27
	Insulin+metformin	0.24±0.08	0.59±0.22	40.51±15.06
Creatinine (umol/L)	<66	0.24±0.08	0.61±0.22	40.13±15.32
	66–83	0.23±0.08	0.58±0.22	38.58±14.63
	≥84	0.22±0.07	0.54±0.22	37.12±14.86

^*P values among the three groups were less than 0.05.