Season of Birth and Exceptional Longevity: Comparative Study of American Centenarians, Their Siblings, and Spouses
Table 6
Odds ratios ( values) to become a centenarian as predicted by conditional logistic regression (fixed effects), by different birth cohort subgroups for siblings survived to age 50. Effects of month of birtha.
Variable
Born before 1889
Born in 1889 or later
Month of birth:
January
1.42 (0.109)
0.90 (0.628)
February
1.41 (0.118)
1.02 (0.911)
March
Reference
Reference
April
1.09 (0.717)
1.18 (0.467)
May
1.27 (0.312)
0.86 (0.500)
June
1.30 (0.289)
1.35 (0.192)
July
1.14 (0.579)
1.00 (0.984)
August
1.19 (0.446)
1.23 (0.360)
September
1.31 (0.209)
1.55 (0.042)
October
1.61 (0.027)
1.13 (0.578)
November
1.78 (0.008)
b
1.23 (0.357)
December
1.33 (0.185)
0.94 (0.772)
Female sex
3.32 (<0.001)
4.74 (<0.001)
Pseudo
0.0842
0.1249
Number of observations
3,279
3,441
aStatistically significant effects () are highlighted in bold.
bStatistically significant after Benjamini-Hochberg procedure.
