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Table 2 Association between parity, age at first birth, and relative risk of death from brain cancer over a 32-year follow-up period

From: Parity, age at first birth, and risk of death from brain cancer: a population-based cohort study in Taiwan

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)

  1. * mutually adjusted.