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Prospective Study
Copyright: ©Author(s) 2026.
World J Nephrol. Mar 25, 2026; 15(1): 114165
Published online Mar 25, 2026. doi: 10.5527/wjn.v15.i1.114165
Table 1 Baseline patient characteristics, key predictors and clinical differences stratified by intensive care unit admission in acute pyelonephritis (tertiary care institute in South India, 2023-2025), n (%)
Parameter
Group 1 (n = 105)
Group 2 (n = 115)
95%CI
P value
Age in years (mean ± SD)56.3 ± 1456.2 ± 1453.6-59; 53.6-58.80.96
Female sex61 (58.1)62 (53.9)48.7-67.5; 44.7-63.10.53
Fever105 (100)57 (49.6)96.5-100; 40.6-58.7< 0.001
Flank pain67 (63.8)22 (19.1)54.4-72.5; 12.6-27.1< 0.001
Pyuria60 (57.1)22 (19.1)47.4-66.3; 12.6-27.1< 0.001
Diabetes93 (88.6)64 (55.7)81.2-93.9; 46.3-64.9< 0.001
CKD19 (18.1)12 (10.4)11.5-26.6; 5.5-17.50.11
AKI60 (57.1)25 (21.7)47.4-66.3; 15-30.2< 0.001
Temperature in degrees celsius (mean ± SD)38.8 ± 0.637.7 ± 1.0538.6-38.9; 37.5-37.9< 0.001
Pulse in beats/minute (mean ± SD)109 ± 1582 ± 7106-112; 81-83< 0.001
SBP in mmHg (mean ± SD)91 ± 10118 ± 889-93; 117-120< 0.001
RR in breaths/minute (mean ± SD)28.3 ± 3.517.8 ± 2.227.6-29; 17.4-18.2< 0.001
Total WBC count in × 109/L (mean ± SD) 21 ± 2.314.8 ± 5.420.6-21.4; 13.8-15.8< 0.001
Platelets in × 109/L (mean ± SD)141 ± 39283 ± 77191.2-222.8; 269-297< 0.001
BUN in mmol/L (mean ± SD)17.3 ± 8.913.6 ± 7.516.6-21.7; 9.2-11.3< 0.001
Serum creatinine in μmol/L (mean ± SD) 230 ± 106150 ± 71188-271; 95-117< 0.001
NEWS2 score (mean ± SD)14.7 ± 3.11.7 ± 1.314.1-15.3; 1.46-1.94< 0.001
Intervention105 (100)51 (44.3)96.5-100; 35.3-53.7< 0.001
Duration of stay in days (mean ± SD)9.2 ± 3.13.5 ± 1.38.6-9.8; 3.3-3.7< 0.001
Mortality13 (12.4)1 (0.9)6.8-20; 0.02-50.01


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