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. 2009 Aug 4;39(6):616–622. doi: 10.1007/s10519-009-9293-9

Table 3.

Genetic model fitting results for the parallel analyses of the three groups based on maternal educational level

Model −2LL df ctm χ2 df dif P
1. ACE model with ACE moderation 44707.77 6,544
1a. drop CLOW 44707.77 6,545 1 0 1 1
1b. drop CMIDDLE 44707.77 6,545 1 0 1 1
1c. drop CHIGH 44707.78 6,545 1 .01 1 .92
2. AE model with ACE moderation 44707.77 6,547 1 0 3 1
2a. drop CLOW moderation 44707.77 6,548 2 0 1 1
2b. drop CMIDDLE moderation 44707.77 6,548 2 0 1 1
2c. drop CHIGH moderation 44707.77 6,548 2 0 1 1
3. AE model with AE moderation 44707.77 6,550 2 0 3 1
3a. Equate A moderation over strata 44708.00 6,552 3 .23 2 .89
3b. Equate E moderation over strata 44709.92 6,552 3 2.15 2 .34
4. Equate A & E moderation over strata 44711.24 6,554 3 3.47 4 .48
4a. drop A moderation 44714.05 6,555 4 2.81 1 .09
4b. drop E moderation 44713.42 6,555 4 2.18 1 .14
5. AE model without moderation 44719.26 6,556 4 8.02 2 .02
3 11.49 6 .07
5a. Equate mean moderation over strata 44720.46 6,558 5 1.2 2 .55
5b. Drop the mean moderation 44752.16 6,559 5a 31.7 1 .00
5. Best model 44720.46 6,558 1 12.69 14 .55

ctm compared to model