TABLE 3.

Age comparison among groups divided by genotypes

Virus and genotypeNo. of casesAvg age (yr) ± SDAge distribution [no. (%) of patients]
0-1 yr1-2 yr>2 yr
HRSV-Aa
    NA1711.4 ± 0.926 (36.6)30 (42.3)16 (22.5)
    NA21411.7 ± 1.135 (24.8)53 (37.6)53 (37.6)
    GA51211.0 ± 0.871 (58.7)31 (25.6)19 (15.7)
    GA751.3 ± 1.23 (60.0)0 (0.0)2 (40.0)
HRSV-Bb
    BA1431.4 ± 1.058 (40.6)51 (35.7)34 (23.8)
    GB351.4 ± 1.13 (60.0)0 (0.0)2 (40.0)
    SAB320.7 ± 0.31 (50.0)1 (50.0)0 (0.0)
  • a For HRSV-A strains, a statistically significant difference in average age was shown between patients with genotypes NA2 and GA5 (P < 0.001), and a statistically significant higher proportion of patients with genotype NA2 than with GA5 that were >2 years old (P < 0.001) was shown.

  • b For HRSV-B strains, no statistically significant age differences were found between patients with different genotypes.