Reference | Year | Number of children (index/control) | Hospitalized | Age at follow up (years) | Presence of wheezing/asthma (index versus control) | P (odds ratio) | Abnormal PFTs in index cases |
---|---|---|---|---|---|---|---|
[5] | 1978 | 35/35 | Yes | 8 | 51% versus 3%* | <0.0005 | Yes |
[6] | 1982 | 130/111 | Yes | 10 | 42% versus 19%* | <0.001 | Yes |
[8] | 1984 | 100/200 | Yes | 7 | N/A | N/A | Yes |
[15] | 1984 | 59/177 | No | 8 | 44% versus 14%† | <0.0001 | - |
[9] | 1987 | 51/24 | Yes | 2 | 60% versus 4%† | <0.01 | - |
[10] | 1992 | 73/73 | Yes | 6 | 43% versus 15%† | <0.001 | Yes |
[12] | 1993 | 70/70 | Yes | 2 | 44% versus 13%† | = 0.001 | - |
[4] | 1995 | 47/93 | Yes | 3 | 23% versus 1%† | <0.001 | - |
[11] | 1997 | 61/47 | Yes | 9–10 | 34% versus 13%† | (3.59) | Yes |
[17] | 1999 | N/A | No | 6 | N/A | (4.3) | - |
N/A | No | 13 | N/A | (1.4; NS) | - | ||
[13] | 1999 | 105/105 and 102 | Yes | 3 | N/A | NS at age 3 years | - |
[14] | 2000 | 47/93 | Yes | 7.5 | 23% versus 2%† | <0.001 | - |