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Table 4 Multivariate analysis for length of hospital stay (dependent variable), and HRV adjusting other risk factors

From: Severe lower respiratory tract infection in infants and toddlers from a non-affluent population: viral etiology and co-detection as risk factors

  Yes No β* 95% CI p
  Mean (95% CI) Mean (95% CI)    
HRV 7.7 (6.1 - 9.3) 5.5 (4.7 - 6.2) 2.2 (0.5 - 3.9) 0.011
Sex (female) 6.8 (5.6 - 8.0) 6.3 (5.4 - 7.3) 0.4 (-0.6 - 1.5) 0.419
Age <6 months 8.2 (7.0 - 9.3) 5.0 (3.9 - 6.0) 3.2 (2.0 - 4.3) <0.001
Family Hx of asthma 7.2 (6.2 - 8.2) 6.0 (4.8 - 7.1) 1.2 (0.1 - 2.3) 0.035
Prematurity 6.7 (5.4 - 7.9) 6.5 (5.5 - 7.4) -0.2 (-1.4 - 1.0) 0.749
Maternal smoking 6.8 (5.6 - 8.2) 6.3 (5.3 - 7.2) 0.6 (-0.6 - 1.8) 0.354
  1. Hx: history; * number of extra days in hospital, compared to negative counterparts.