Table 2.

Regression coefficients, significance levels and effect sizes from tests of rs6449182, rs3796863 and putative CD38 expression on the nine targeted outcomes

	CD38				CD38				CD38
	rs6449182				rs3796863				expression
	B	95% CI	P	d	B	95% CI	P	d	B	95% CI	P	d
Relationship satisfaction	−0.15	−0.29, −0.01	0.03	0.39	−0.03	−0.24, 0.17	0.77	0.05	−0.11	−0.23, 0.01	0.07	0.33
Receiving a gratitude expression
Perceived responsiveness	−0.24	−0.45, −0.02	0.03	0.40	−0.14	−0.45, 0.18	0.39	0.16	−0.20	−0.37, −0.04	0.02	0.44
Positive emotions	−0.22	−0.55, 0.11	0.19	0.24	−0.19	−0.66, 0.28	0.43	0.15	−0.20	−0.48, 0.08	0.16	0.26
Loving	−0.37	−0.69, −0.05	0.02	0.42	−0.09	−0.58, 0.40	0.71	0.07	−0.26	−0.55, 0.02	0.07	0.33
Expressing gratitude
Perceived responsiveness	−0.19	−0.35, −0.03	0.02	0.42	−0.37	−0.68, −0.06	0.02	0.43	−0.26	−0.41, −0.12	0.001	0.65
Positive emotions	−0.31	−0.62, −0.001	0.05	0.36	−0.30	−0.69, 0.09	0.13	0.28	−0.31	−0.54, −0.07	0.01	0.47
Loving	−0.58	−0.92, −0.24	0.001	0.62	−0.25	−0.62, 0.12	0.18	0.24	−0.46	−0.71, −0.22	0.000	0.69
Observed praising behavior	−0.21	−0.42, −0.001	0.05	0.39	0.03	−0.20, 0.26	0.79	0.05	−0.12	−0.31, 0.06	0.19	0.26
Daily expressed gratitude	0.70	0.53, 0.91	0.009	n/a	0.73	0.96, 1.94	0.09	n/a	0.70	0.57, 0.88	0.002	n/a

B is the unstandardized regression coefficient from multilevel models with CD38 status as a predictor of the outcome of interest; 95% CI is the 95% confidence interval; P is statistical significance level, and the effect size (absolute value) is Cohen’s d. For daily expressed gratitude, the model accounts for Bernoulli distribution of the outcome (0 or 1), and we therefore present the odds ratio rather than B.