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Table 2 Genetic standard deviations specific to the discrete environment, the genetic correlations, and the corresponding AICa

From: A comparison of discrete versus continuous environment in a variance components-based linkage analysis of the COGA data

  Model AICa
Trait σxgb σygb ρgc Unconstrained σxg = σyg ρg = 1
CB21 3.8850 3.5510 1.0000 3700.2200 3698.5900 3698.2200
NTTH1 0.2400 0.2080 1.0000 3005.3000 3003.5600 3003.3000
NTTH2 0.4380 0.4080 1.0000 3521.6300 3519.7700 3519.6300
NTTH3 0.5080 0.5010 1.0000 3563.2000 3561.2000 3561.2000
NTTH4 0.4050 0.3470 1.0000 3552.6800 3551.1200 3550.6800
TTDT1 0.3950 0.5060 1.0000 3795.3100 3794.0500 3793.3100
TTDT2 0.5870 0.8050 1.0000 4036.0500 4037.1500 4034.0500
TTDT3 0.7410 0.9570 1.0000 4302.4600 4302.6100 4300.4600
TTDT4 0.8710 1.0390 1.0000 4479.1500 4478.1700 4477.1500
TTTH1 0.463d 0.653d 0.9020 3452.8800 3455.1500 3450.9700
TTTH2 0.7130 0.7360 1.0000 4022.0400 4020.0800 4020.0400
TTTH3 0.7460 0.8060 1.0000 4059.3000 4057.6100 4057.3000
TTTH4 0.6140 0.6420 1.0000 3850.9600 3849.0500 3848.9600
  1. aAIC, Akaike's Information Criteria
  2. bGenetic standard deviation within smokers (x) and nonsmokers (y)
  3. cGenetic correlation between smokers and nonsmokers. None were significantly different from 1, i.e., the sets of genes influencing the traits were identical between smokers and nonsmokers.
  4. dp = 0.039