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Table 2 Regression analysis results

From: Evolution of embryonic developmental period in the marine bird families Alcidae and Spheniscidae: roles for nutrition and predation?

Variable Standardized coefficient Standard error
Clutch size -8.337654** 2.552405
Offshore foraging 1.990214 1.575975
Diurnality -3.497337* 1.695883
Open nests -4.164798* 2.258906
  1. Summary of the (phylogenetically corrected, reasonably assuming Brownian motion given λ = 0.999995) analysis of the regression of auk and penguin embryonic developmental period (EDP) residuals (computed from the EDP predicted from egg mass) on clutch size, foraging habitat (0 = inshore, 1 = offshore), activity pattern (0 = nocturnal or crepuscular, 1 = diurnal) and nesting habits (0 = enclosed, 1 = open). The independent variables explain a large amount of the variation in EDP (r2 = 0.444949). Alpha = 28.483666 (s.e. = 5.898111), likelihood = -79.736323.