Table 4.

Total GNRI levels and 28 day mortality in critically ill patients with prior or New AF.

MIMIC-IV	Model 1	Model 2	Model 3
	HR (95%CI) P	HR (95%CI) P	HR (95%CI) P
28 day mortality
All	0.99 (0.99 ~ 0.99) p < 0.001	0.99 (0.99 ~ 0.99) p < 0.001	0.99 (0.98 ~ 0.99) p < 0.001
New-onset AF	0.99 (0.98 ~ 0.99) p < 0.001	0.99 (0.98 ~ 0.99) p < 0.001	0.99 (0.99 ~ 0.99) P = 0.009
Prior AF	1.00 (0.99 ~ 1.00) p = 0.178	0.99 (0.99 ~ 1.00) p = 0.072	1.00 (0.99 ~ 1.01) p = 0.761
Sepsis
All	0.99 (0.99 ~ 0.99) P = 0.005	0.99 (0.99 ~ 0.99) p < 0.001	0.99 (0.99 ~ 0.99) p < 0.001
New-onset AF
Continuous	0.99 (0.98 ~ 0.99) p < 0.001	0.99 (0.98 ~ 0.99) p = 0.001	0.99 (0.98 ~ 0.99) P = 0.028
Q1: GNRI < 90.85	1.00 (reference)	1.00 (reference)	1.00 (reference)
Q2: 90.85 ≤ GNRI < 100.77	0.75 (0.56 ~ 1.00) p = 0.052	0.90 (0.67 ~ 1.22) p = 0.509	0.91 (0.67 ~ 1.24) p = 0.541
Q3: 100.77 ≤ GNRI < 111.61	0.87 (0.65 ~ 1.15) p = 0.316	0.94 (0.70 ~ 1.27) p = 0.684	0.94 (0.70 ~ 1.28) p = 0.711
Q4: GNRI ≥ 111.61	0.56 (0.41 ~ 0.76) p < 0.001	0.64 (0.46 ~ 0.91) p = 0.012	0.66 (0.46 ~ 0.93) p = 0.019
Prior AF	1.00 (0.99 ~ 1.00) p = 0.540	0.99 (0.99 ~ 1.00) p = 0.118	1.00 (0.99 ~ 1.00) p = 0.313
CRRT
All	1.00 (0.99 ~ 1.01) p = 0.859	1.00 (0.99 ~ 1.01) p = 0.706	1.00 (0.99 ~ 1.01) p = 0.846
New-onset AF	1.01 (0.99 ~ 1.02) p = 0.859	1.01 (0.99 ~ 1.02) p = 0.262	1.01 (1.00 ~ 1.02) p = 0.198
Prior AF	0.99 (0.97 ~ 1.00) p = 0.133	0.99 (0.97 ~ 1.00) p = 0.092	0.99 (0.97 ~ 1.00) p = 0.109
Cardiac surgery
All	1.00 (0.98 ~ 1.02) p = 0.817	1.00 (0.97 ~ 1.02) p = 0.878	1.01 (0.99 ~ 1.04) p = 0.320
New-onset AF	0.99 (0.97 ~ 1.01) p = 0.308	0.99 (0.97 ~ 1.02) p = 0.579	0.99 (0.97 ~ 1.01) p = 0.479
Prior AF	1.07 (1.01 ~ 1.13) p = 0.018	1.06 (1.01 ~ 1.11) p = 0.019	1.05 (0.97 ~ 1.13) p = 0.201

GNRI, Geriatric Nutrition Risk Index; HR, hazard ratio; CI, confidence interval; CRRT, continuous renal replacement therapy; AF, atrial fibrillation.