Characteristics and demographic data for the inner city study population, according to biodiversity score
| Score 0, mean (SD) | Score 1, mean (SD) | Score 2, mean (SD) | Score 3, mean (SD) | Score 4, mean (SD) | Score 5, mean (SD) | p Value* | |
|---|---|---|---|---|---|---|---|
| Mean age, years | 43.6 (7.3) | 43.7 (7.3) | 42.3 (7.3) | 42.2 (7.3) | 41.9 (7.0) | 39.9 (7.4) | <0.001 |
| % (n) | % (n) | % (n) | % (n) | % (n) | % (n) | ||
| Gender | |||||||
| Male | 53.6 (30) | 50.1 (137) | 45.7 (313) | 45.1 (296) | 41.9(142) | 40.8 (44) | |
| Female | 46.4 (26) | 49.8 (136) | 54.3 (372) | 54.9 (361) | 58.1 (197) | 59.3 (64) | 0.243 |
| Ever smoker | 48.2 (27) | 61.3 (166) | 55.8 (381) | 58.0 (380) | 64.3 (218) | 62.0 (67) | 0.058 |
| Paternal smoking | 70.9 (34) | 62.8 (165) | 64.4 (428) | 68.4 (437) | 73.4 (240) | 78.9 (82) | 0.004 |
| Maternal smoking | 27.3 (15) | 23.3 (62) | 25.1 (169) | 24.8 (161) | 32.9 (110) | 34.3 (37) | 0.020 |
| Cat childhood | 0 | 3.9 (11) | 12.9 (95) | 36.0 (247) | 72 (249) | 100 (108) | <0.001 |
| Dog childhood | 0 | 5.6 (16) | 9.8 (72) | 31.6 (217) | 71.4 (247) | 100 (108) | <0.001 |
| Older siblings | 0 | 48.6 (139) | 82.4 (605) | 91.8 (630) | 97.4 (337) | 100 (108) | <0.001 |
| Bedroom sharing | 0 | 23.1 (66) | 58.0 (426) | 78.1 (536) | 90.2 (312) | 100 (108) | 0.005 |
| School attendance <5 years | 0 | 18.9 (54) | 36.8 (270) | 62.4 (428) | 69.1 (239) | 100 (108) | <0.001 |
| Family history of allergic disease | 31.9 (15) | 33.8 (78) | 32 (191) | 35.4 (204) | 31.8 (93) | 33.3 (31) | 0.849 |
| Serious respiratory infection <5 years | 9.4 (5) | 11.9 (32) | 10.6 (74) | 8.9 (58) | 11.1 (37) | 11.3 (11) | 0.754 |
*Statistical significance determined by χ2 or analysis of variance.