Table 2. Associations of attending daycare within 1st and 6 years of life, total daycare childhours within 6 years of life, living with other children, birth order and attending baby groups within 1st year and CABT.
|
Overall CABT |
Glioma |
Embryonal CNS tumour |
Other CABT |
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cases | Controls | OR | 95% CI | Cases | Controls | OR | 95% CI | Cases | Controls | OR | 95% CI | Cases | Controls | OR | 95% CI | |
|
Daycare within 1st year of life | ||||||||||||||||
| No | 258 | 476 | 1.00 | Reference | 142 | 254 | 1.00 | Reference | 44 | 86 | 1.00 | Reference | 72 | 136 | 1.00 | Reference |
| Yes |
94 |
167 |
1.11 |
0.80–1.55 |
50 |
93 |
1.02 |
0.65–1.60 |
18 |
33 |
1.17 |
0.54–2.53 |
26 |
41 |
1.28 |
0.68–2.40 |
|
Attending daycare beween 0 and 6 years | ||||||||||||||||
| No | 44 | 87 | 1.00 | Reference | 24 | 48 | 1.00 | Reference | 7 | 13 | 1.00 | Reference | 13 | 26 | 1.00 | Reference |
| Yes |
308 |
556 |
0.97 |
0.63–1.49 |
168 |
299 |
0.96 |
0.53–1.73 |
55 |
106 |
1.05 |
0.36–3.05 |
85 |
151 |
0.94 |
0.43–2.03 |
|
Total daycare childhours (quintiles) | ||||||||||||||||
| 1st Quintile | 61 | 131 | 1.00 | Reference | 30 | 73 | 1.00 | Reference | 9 | 19 | 1.00 | Reference | 22 | 39 | 1.00 | Reference |
| 2nd Quintile | 70 | 107 | 1.36 | 0.87–2.11 | 32 | 60 | 1.39 | 0.75–2.59 | 13 | 24 | 1.22 | 0.40–3.75 | 25 | 23 | 1.62 | 0.72–3.65 |
| 3rd Quintile | 62 | 119 | 1.05 | 0.62–1.76 | 33 | 66 | 1.39 | 0.65–2.97 | 13 | 16 | 2.71 | 0.60–12.32 | 16 | 37 | 0.61 | 0.25–1.48 |
| 4th Quintile | 80 | 104 | 1.63 | 0.96–2.78 | 49 | 48 | 3.39 | 1.54–7.46 | 16 | 21 | 2.08 | 0.49–8.72 | 15 | 35 | 0.61 | 0.24–1.52 |
| 5th Quintile | 53 | 126 | 0.89 | 0.52–1.54 | 29 | 62 | 1.52 | 0.68–3.39 | 5 | 26 | 0.42 | 0.09–1.91 | 19 | 38 | 0.64 | 0.26–1.57 |
| Per 50 000 childhours |
|
|
0.94 |
0.79–1.12 |
|
|
1.19 |
0.92–1.54 |
|
|
0.67 |
0.42–1.06 |
|
|
0.80 |
0.59–1.08 |
|
Living with other children before age 6 years | ||||||||||||||||
| No | 15 | 37 | 1.00 | Reference | 9 | 25 | 1.00 | Reference | 2 | 6 | 1.00 | Reference | 4 | 6 | 1.00 | Reference |
| Yes |
335 |
601 |
1.38 |
0.73–2.59 |
182 |
319 |
1.64 |
0.73–3.67 |
59 |
110 |
1.58 |
0.29–8.58 |
94 |
172 |
0.78 |
0.22–2.78 |
|
Birth order | ||||||||||||||||
| 1st Born | 144 | 249 | 1.00 | Reference | 79 | 134 | 1.00 | Reference | 31 | 46 | 1.00 | Reference | 34 | 69 | 1.00 | Reference |
| >1st Born |
207 |
391 |
0.89 |
0.68–1.16 |
113 |
212 |
0.90 |
0.63–1.29 |
31 |
73 |
0.63 |
0.34–1.16 |
63 |
106 |
1.14 |
0.67–1.95 |
|
Attending baby groups within 1st year | ||||||||||||||||
| No | 90 | 182 | 1.00 | Reference | 46 | 107 | 1.00 | Reference | 19 | 37 | 1.00 | Reference | 25 | 38 | 1.00 | Reference |
| Yes | 261 | 455 | 1.12 | 0.82–1.54 | 146 | 237 | 1.47 | 0.95–2.28 | 43 | 82 | 1.00 | 0.47–2.13 | 72 | 136 | 0.74 | 0.42–1.32 |
Abbreviations: CABT=childhood and adolescent brain tumour; CI=confidence intervals; CNS=central nervous system; OR=odds ratio.
Conditional logistic regression analyses, which adjusts for matching factors (age, gender and region) expressed as OR values with 95% CIs.