Journal of Aging Research / 2011 / Article / Tab 7

Research Article

Season of Birth and Exceptional Longevity: Comparative Study of American Centenarians, Their Siblings, and Spouses

Table 7

Odds ratios ( values) to become a centenarian as predicted by conditional logistic regression (fixed effects), by different age cut-off and gender subgroups for spouses of centenarians. Effects of month of birtha.

VariableAll spousesSpouses survived to age 50

Month of birth:
 January1.27 (0.358)1.29 (0.346)
 February1.65 (0.066)1.83 (0.032)
 March1.58 (0.084)1.65 (0.067)
 AprilReferenceReference
 May1.37 (0.263)1.46 (0.190)
 June1.46 (0.176)1.63 (0.099)
 July1.61 (0.096)1.66 (0.086)
 August1.52 (0.117)1.56 (0.112)
 September1.58 (0.079)1.66 (0.063)
 October2.17 (0.004) b,c2.24 (0.004) b,c
 November2.22 (0.003) b,c2.22 (0.004) b,c
 December1.21 (0.487)1.32 (0.332)

Female sex3.40 (<0.001)3.42 (<0.001)

Pseudo 0.21920.2226
Number of observations1,9211,800

aStatistically significant seasonal effects ( ) are highlighted in bold.
bStatistically significant after Bonferroni adjustment.
cStatistically significant after Benjamini-Hochberg procedure.

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