Table 2

Association between parity, age at first birth, and relative risk of death from brain cancer over a 32-year follow-up period
Variables Crude HR (95%CI) Multivariate-Adjusted HR*(95% CI)
Age at recruitment (1st birth)
≤ 20 1.00 1.00
21-25 1.36 (0.92~2.01) 1.35 (0.91~2.01)
> 25 1.73 (1.16~2.58) 1.61 (1.05~2.45)
p=0.0034 for linear trend p=0.0238 for linear trend
Parity
1 1.00 1.00
2 0.71 (0.52~0.97) 0.73 (0.53~0.99)
3+ 0.56 (0.41~0.78) 0.60 (0.43~0.83)
p=0.0005 for linear trend p =0.0034 for linear trend
Marital status
Married 1.00 1.00
Not married 0.89 (0.42~1.88) 0.81 (0.38~1.73)
Years of schooling
≤ 9 y 1.00 1.00
> 9y 1.07 (0.86~1.34) 0.93 (0.73~1.18)
Birth place
Hospital / clinic 1.00 1.00
Home / other 1.03 (0.59~1.80) 1.16 (0.66~2.03)

* mutually adjusted.

Chiu et al.

Chiu et al. BMC Public Health 2012 12:857   doi:10.1186/1471-2458-12-857

Open Data