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Table 4 Predictors and regression coefficients in the NIRUDAK model

From: Continuous diagnostic models for volume deficit in patients with acute diarrhea

Categorical variables, No. (%)   Regression coefficient (95% CI) P value
Eye level
 Normal (reference level) 546 (26) 1 < 0.001
 Sunken 1593 (74) 0.90 (0.62, 1.19)
Skin pinch
 Rapid (reference level) 825 (39) 1 0.591
 Slow 1053 (49) 1.14 (− 1.69, 3.97) 0.428
 Very slow 261 (12) − 0.93 (− 6.17, 4.30) 0.727
Vomiting episodes in 24 h
 None (reference level) 208 (10) 1 < 0.001
 1–5 729 (34) 2.55 (0.76, 4.33) 0.005
 6–10 770 (36) 4.09 (2.34, 5.84) < 0.001
 > 10 432 (20) 3.94 (2.11, 5.78) < 0.001
Sex
 Male 336 (44) 1 < 0.001
 Female 435 (56) 0.69 (0.46, 0.92)
Continuous variables, mean, (SD)
 Age (years) 38.3 (22.1) 0.13 (0.06, 0.19) < 0.001
 Systolic BP (supine) 94.2 (20.6) − 0.01 (− 0.02, 0.01) 0.398
 MUAC 236.4 (36.7) − 0.02 (− 0.03, − 0.01) 0.005