Table 2.

Cox regression analysis of quartiles of energy intake per actual or standard bodyweight and all‐cause mortality

Actual BW
	Events	Q1		Q2		Q3	Q4		P‐value
		≤24.85		24.86–29.73		29.74–34.78	≥34.79
		kcal/kg BW		kcal/kg BW		kcal/kg BW	kcal/kg BW
		HR	P	HR	P	Reference	HR	P
		(95% CI)		(95% CI)			(95% CI)
Model 1 (crude)	59	3.21	0.004	1.40	0.473	1	1.91	0.141	0.051
		(1.45–7.12)		(0.56–3.47)			(0.81–4.49)
Model 2†	59	4.16	0.001	1.56	0.342	1	1.77	0.198	0.011
		(1.80–9.58)		(0.62–3.92)			(0.74–4.21)
Model 3‡	50	3.87	0.002	0.94	0.905	1	1.54	0.355	0.016
		(1.63–9.16)		(0.32–2.76)			(0.62–3.82)
Model 4§	50	3.83	0.002	0.92	0.883	1	1.60	0.313	0.020
		(1.62–9.09)		(0.31–2.72)			(0.64–4.00)
Standard BW
	Events	Q1		Q2		Q3	Q4		P‐value
		≤27.77		27.78–31.44		31.45–36.42	≥36.43
		kcal/kg BW		kcal/kg BW		kcal/kg BW	kcal/kg BW
		HR	P	HR	P	Reference	HR	P
		(95% CI)		(95% CI)			(95% CI)
Model 1 (crude)	59	3.23	0.004	1.21	0.689	1	1.83	0.166	0.042
		(1.46–7.14)		(0.48–3.06)			(0.78–4.33)
Model 2†	59	3.57	0.002	1.51	0.387	1	2.20	0.074	0.049
		(1.60–7.97)		(0.59–3.86)			(0.93–5.21)
Model 3‡	50	3.94	0.004	1.68	0.334	1	2.22	0.116	0.046
		(1.57–9.94)		(0.59–4.79)			(0.82–6.00)
Model 4§	50	3.88	0.004	1.67	0.337	1	2.23	0.114	0.054
		(1.53–9.79)		(0.59–4.78)			(0.83–6.03)

^† Adjusted for age, sex and body mass index.

^‡ Adjusted for age, sex, body mass index, glycated hemoglobin, systolic blood pressure, low‐density lipoprotein cholesterol, estimated glomerular filtration rate, physical activity, history of ischemic heart disease, history of stroke and history of hypoglycemia.

^§ Adjusted for age, sex, body mass index, glycated hemoglobin, systolic blood pressure, low‐density lipoprotein cholesterol, estimated glomerular filtration rate, physical activity, history of ischemic heart disease, history of stroke, history of hypoglycemia and protein intake per actual bodyweight. CI, confidence interval; HR, hazard ratio; Q, quartile.