Table 4.

Actor-Partner Interdependence Model (APIM) Analysis of the Over-Time Actor and Partner Effects of Relationship Maintenance Strategies on Dyadic Adjustment in Couples Coping with Lung Cancer

	Effects of positivity				Effects of openness
	B	SE	t	Effect size (r)	B	SE	t	Effect size (r)
Patient intercept	119.93	1.57	-	-	119.65	1.62	-	-
Spouse intercept	117.21	1.70	-	-	117.78	1.78
Actor’s Social Role	2.53	1.68	1.50	.08	2.07	3.21	.64	.03
Actor’s Maintenance	6.70	1.30	5.16***	.27	3.33	1.27	2.63**	.10
Partner’s Maintenance	5.56	1.33	4.17**	.22	3.36	1.14	2.95***	.16
Actor’s Maintenance × Actor’s Social Role			−.32	.02			.83	.04
Effects of patient’s maintenance on patient’s DAS	4.85	1.17			3.50	.91
Effects of spouse’s maintenance on spouse’s DAS	6.59	1.28			3.76	1.17
Partner’s Maintenance × Actor’s Social Role			−1.76#	.10			−2.23*	.12
Effects of patient’s maintenance on spouse’s DAS	1.91	1.20			.13	1.07
Effects of spouse’s maintenance on patient’s DAS	3.89	1.37			2.67	1.09
	Effects of assurances				Effects of networks
	B	SE	t	Effect size (r)	B	SE	t	Effect size (r)
Patient intercept	119.85	2.38	-	-	119.47	1.58	-	-
Spouse intercept	117.37	1.99			117.52	2.00
Actor’s Social Role	2.39	1.71	1.40	.07	2.12	1.77	1.21	.06
Actor’s Maintenance	5.89	1.39	4.23***	.22	3.45	1.21	2.79***	.15
Partner’s Maintenance	4.65	1.26	3.69***	.19	3.59	1.66	2.99***	.16
Actor’s Maintenance × Actor’s Social role			.08	.004			.84	.04
Effects of patient’s maintenance on patient’s DAS	4.79	1.08			4.28	.94
Effects of spouse’s maintenance on spouse’s DAS	6.06	1.35			4.57	1.09
Partner’s Maintenance × Actor’s Social Role			−1.85#	.10			−1.73#	.11
Effects of patient’s maintenance on spouse’s DAS	3.89	1.23			1.72	1.00
Effects of spouse’s maintenance on patient’s DAS	.82	1.27			3.46	1.14
	Effects of shared tasks
	B	SE	t	Effect size (r)
Patient intercept	119.47	1.58	-	-
Spouse intercept	117.52	1.99
Actor’s Social Role	1.90	1.95	.97	.05
Actor’s Maintenance	2.85	1.50	1.89#	.10
Partner’s Maintenance	3.35	1.16	2.89*	.15
Actor’s Maintenance × Actor’s Social role			−.17	.01
Effects of patient’s maintenance on patient’s DAS	1.31	.99
Effects of spouse’s maintenance on spouse’s DAS	2.23	1.44
Partner’s Maintenance × Actor’s Social Role			−.88	.05
Effects of patient’s maintenance on spouse’s DAS	1.30	1.26
Effects of spouse’s maintenance on patient’s DAS	2.64	1.12

Note. B = raw coefficient, SE = standard error, DAS = Dyadic Adjustment Scale total score; effect size r associated with each t: r = $\sqrt{t^{\text{2}}/t^2+df}$,

^#p<.10,

^*p<.05,

^**p<.01,

^***p<.005