Table 5 Comparison of age among children with or without specific aetiology

Detected aetiology

Yes (n = 156)

No (n = 25)

 Age (months)^a

17 (10–27)

19 (11–30)

0.5

Pneumococcal infection

Yes (n = 39)

No (n = 142)

 Age (months)^a

21 (11–31)

17 (10–27)

0.8

C. trachomatis

Yes (n = 9)

No (n = 172)

 Age (months)^a

15 (4–23)

21 (10–28)

0.2

Rhinovirus infection

Yes (n = 39)

No (n = 142)

 Age (months)^a

17 (9–34)

18 (11–27)

0.7

Human metapneumovirus infection

Yes (n = 8)

No (n = 173)

 Age (months)^a

10 (5–18)

18 (11–28)

0.046