Table 3.

Linear Mixed Model with Interactions Predicting Psychosocial Outcomes over Time

	Intervention Group (N=67)	Control Group (N=67)	Mixed Model Analysis with Interactions
	Mean ± SD	Mean ± SD	Effect	P-value
Self-Care Inventory-R
Baseline	59.1±12.2	60.0±15.1	Time	<0.001
3 Month	61.9±12.6	65.6±14.4	Group	0.51
6 Month	64.5±10.4	65.1±15.3	Group*Time	0.52
12 Month	64.7±13.3	68.2±14.1
Glucose checks per day
Baseline	1.2±1.0	1.5±1.2	Time	0.50
3 Month	1.3±1.0	1.5±1.3	Group	0.12
6 Month	1.2±0.9	1.7±1.3	Group*Time	0.26
12 Month	1.2±1.0	1.8±1.6
6-minute walk test
Baseline	492.6±90.1	475.9±102.4	Time	0.55
3 Month	488.0±84.8	472.6±104.3	Group	0.21
6 Month	475.8±86.4	472.4±107.5	Group*Time	0.66
12 Month	485.3±79.5	476.1±94.1
Pedometer readings
Baseline	16,794±11,895	16,097±7744	Time	0.89
3 Month	17,567±15,711	14,633±8157	Group	0.25
6 Month	16,548±10,042	14.679±8707	Group*Time	0.83
12 Month	16,619±10,452	15,350±8745
Body Mass Index
Baseline	34.6±7.0	33.7±7.1	Time	0.63
3 Month	34.1±6.2	33.7±7.1	Group	0.34
6 Month	34.4±7.2	33.0±7.2	Group*Time	0.86
12 Month	34.4±7.5	33.4±6.4
Diabetes Quality of Life
Baseline	67.9±10.6	66.9±12.1	Time	0.03
3 Month	69.7±10.8	69.9±12.4	Group	0.63
6 Month	71.1±10.0	70.9±12.1	Group*Time	0.86
12 Month	71.0±10.6	71.1±12.3
Problem Areas in Diabetes
Baseline	33.3±20.3	34.8±23.1	Time	0.003
3 Month	27.7±16.9	28.9±21.1	Group	0.45
6 Month	26.1±15.3	28.3±22.5	Group*Time	0.98
12 Month	25.0±16.0	25.7±22.7
Frustration with Self-Care
Baseline	48.7±22.5	43.6±23.7	Time	<0.001
3 Month	39.7±23.3	36.2±23.5	Group	0.36
6 Month	36.3±21.0	35.2±27.0	Group*Time	0.72
12 Month	34.8±23.4	32.2±25.1

Linear Mixed Model showed no between group differences for any variable over time.