TABLE 3.
Twin pair correlations and standardized proportions of variance [95% Confidence Intervals] attributable to additive genetic (A), shared environmental (C), and non-shared environmental (E) influences for the full and final univariate models of religious service attendance during childhood (C-RA) and adulthood (A-RA) and alcohol involvement in 3,787 White and Black twins
| Twin pair correlations |
Full model |
Final model |
|||||
|---|---|---|---|---|---|---|---|
| r MZ | r DZ | Additive genetic (A) |
Shared environment (C) |
Person-specific environment (E) |
A | E | |
| Whites | |||||||
| C-RA (more than weekly) |
.78* [.72, .84]; N = 911 pairs |
.66* [.56, .66]; N = 607 pairs |
.23 [.01, .48] | .55 [.32, .74] | .22 [.16, .29] | ACE is best-fitting model | |
| A-RA (weekly or more) |
.82* [.77, .87]; N = 911 pairs |
.68* [.59, .77]; N = 607 pairs |
.28 [.22, .50] | .54 [.33, .72] | .18 [.14, .24] | ACE is best-fitting model | |
| Ever drinking |
.87* [.80, .94]; N = 910 pairs |
.72* [.58, .87]; N = 606 pairs |
.32 [.02, .69] | .55 [.20, .81] | .13 [.07, .22] | ACE is best-fitting model | |
| Timing of first alcohol use |
.72* [.67, .77]; N = 833 pairs |
.44* [.35, .53]; N = 549 pairs |
.55 [.35, .75] | .17 [.00, .35] | .28 [.23, .33] | .73 [.68, .77] | .27 [.23, .32] |
| DSM5 AUD | .59* [.50, .67]; N = 823 pairs |
.42* [.30, .55]; N = 542 pairs |
.33 [.04, .64] | .26 [.00, .51] | .41 [.33, .50] | .61 [.53, .69] | .39 [.31, .47] |
| Blacks | |||||||
| C-RA (more than weekly) |
.68* [.50, .87]; N = 127 pairs |
.33* [.07, .59]; N = 127 pairs |
.68 [.06, .83] | .00 [.00, .50] | .32 [.17, .54] | .68 [.48, .83] | .32 [.17, .52] |
| A-RA (weekly or more) |
.69* [.50, .87]; N = 127 pairs |
.36* [.10, .62]; N = 127 pairs |
.65 [.08, .84] | .03 [.00, .54] | .31 [.17, .53] | .69 [.50, .84] | .31 [.27, .51] |
| Ever drinking |
.75* [.54, .97]; N = 127 pairs |
.43* [.09, .76]; N = 128 pairs |
.71 [.00, .91] | .04 [.00, .67] | .25 [.09, .52] | .76 [.51, .91] | .24 [.09, .49] |
| Timing of first alcohol use |
.57* [.38, .76]; N = 99 pairs |
.29* [.04, .53]; N = 96 pairs |
.55 [.00, .72] | .01 [.00, .50] | .44 [.28, .66] | .56 [.36, .72] | .44 [.28, .64] |
| DSM5 AUD | .56* [.26, .86]; N = 102 pairs |
.36 [−.03, .74]; N = 96 pairs |
.44 [.00, .79] | .11 [.00, .65] | .45 [.21, .78] | .57 [.25, .79] | .43 [.21, .75] |
*
Indicates significant at p < .05.