Daycare Attendance and Childhood Leukaemia Risk
Author Information
Author(s): Ma X, Buffler P A, Selvin S, Matthay K K, Wiencke J K, Wiemels J L, Reynolds P
Primary Institution: University of California, Berkeley
Hypothesis
Delayed exposure to common infections leads to an increased risk of childhood leukaemia.
Conclusion
The study found that extensive contact with other children in daycare is associated with a reduced risk of childhood acute lymphoblastic leukaemia.
Supporting Evidence
- Children who attended daycare had a lower risk of acute lymphoblastic leukaemia compared to those who did not.
- Controls started daycare at a younger age and attended for longer durations than cases.
- The odds ratio for each thousand child-hours of daycare was 0.991, indicating a protective effect.
Takeaway
Kids who go to daycare might get sick less often and have a lower chance of getting a type of blood cancer called leukaemia.
Methodology
The study used a matched case-control design with 140 pairs of children diagnosed with leukaemia and controls matched on various demographic factors.
Potential Biases
Potential bias due to reliance on self-reported data from parents.
Limitations
The sample size is relatively small, which may reduce the power of the study.
Participant Demographics
Children aged 1-14 years, with cases and controls matched on date of birth, gender, race, and Hispanicity.
Statistical Information
P-Value
0.003
Confidence Interval
0.984–0.999
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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