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. Author manuscript; available in PMC: 2016 Jun 1.
Published in final edited form as: J Behav Med. 2015 Feb 17;38(3):483–496. doi: 10.1007/s10865-015-9622-9

Table 2.

Least square means and standard errors for all outcome measures

Control Experimental
Baseline Post 3-month 6-month Baseline Post 3-month 6-month

Primary
Outcomes
Cognitions
ASEQ
 Mean
score
5.54(0.16) 5.55(0.16)Δa 5.79(0.17) 5.80(0.17)Δc 5.40(0.16) 5.94(0.16)Δa 6.05(0.17) 6.32(0.18)Δc
PCS
 Total
score
17.36(1.0
8)
16.97(1.1
0)
16.13(1.1 3) 16.41(1.1 5)Δc 19.68(1.0
9)
17.42(1.1 2) 16.16(1.1
5)
14.31(1.1 8)Δc
Rumination 6.23(0.40) 6.20(0.40) 5.83(0.43)Δb 6.13(0.43)Δc 7.01(0.40) 6.04(0.41) 5.45(0.44)Δb 5.04(0.45)Δc
Magnificati
on
3.90(0.27) 3.80(0.26) 3.70(0.27) 3.76(0.28)Δc 4.47(0.27) 4.10(0.27) 3.74(0.28) 3.24(0.29)Δc
Helplessne
ss
7.23(0.49) 7.00(0.51) 6.58(0.51) 6.51(0.52)Δc 8.20(0.50) 7.26(0.52) 6.92(0.52) 5.98(0.53)Δc
PAQ
 Total
score
20.88(0.3
2)
21.14(0.3
7)
21.40(0.3
7)
21.75(0.4
1)
20.72(0.3
3)
21.76(0.3
8)
22.40(0.3
8)
22.70(0.4
2)
Confidence 5.25(0.12) 5.50(0.13) 5.61(0.14) 5.74(0.14) 5.33(0.13) 5.83(0.13) 5.97(0.14) 6.09(0.15)
Response 15.63(0.2
6)
15.64(0.2
8)
15.79(0.2
7)
16.01(0.2
9)
15.39(0.2
6)
15.93(0.2
9)
16.42(0.2
7)
16.60(0.3
1)
Self-
manageme
nt behaviors
Exercise
behavior
(min)
Stretching 73.82(5.9
4)
70.98(5.7
3)
73.07(6.0
4)
74.39(5.9
7)
63.72(5.9
7)
60.22(5.8
7)
66.11(6.1
6)
66.87(6.1
8)
 Aerobic
exercise
158.22(15
.22)
165.08(17
.21)
162.69(15
.72)
186.95(16
.98)
155.71(15
.34)
173.35(17
.51)
155.13(15
.96)
187.97(17
.46)
Cognitive
symptom
manageme
nt
 Mean
score
1.89(0.09) 1.96(0.08) 1.95(0.09) 2.04(0.09) 1.91(0.09) 2.09(0.08) 2.25(0.09) 2.26(0.10)
Communic
ation with
physicians
 Mean
score
3.00
(0.10)
2.92(0.10) 3.18(0.11) 3.17(0.11) 3.13(0.10) 3.11(0.10) 3.28(0.11) 3.29(0.11)
Pain
BPI
 Pain
Severity
5.42(0.14) 5.11(0.16) 4.84(0.19) 4.89(0.17) 5.34(0.15) 5.00(0.16) 4.70(0.19) 4.53(0.18)
 Pain
Interferenc
e
5.65(0.20) 4.85(0.22) 4.70(0.24) 4.34(0.22) 5.36(0.20) 4.84(0.23) 4.65(0.24) 4.28(0.23)
Secondary Outcomes
DASS
 Depression 10.00(0.83) 9.92(0.90) 9.41(0.89) 9.26(0.86) 12.23(0.84) 11.64(0.92)
 Anxiety 8.42(0.75) 8.69(0.80) 7.63(0.74) 7.86(0.79) 10.46(0.76) 10.26(0.82)
 Stress 14.03(0.78) 13.94(0.78) 13.21(0.87) 13.71(0.88) 14.92(0.78) 14.90(0.80)
CPCI 2.52(0.18) 2.49(0.17) 2.48(0.18) 2.45(0.19) 2.84(0.19) 3.00(0.17)
 Assistance
 Coping 3.94(0.18) 3.84(0.18) 3.89(0.18) 4.02(0.19) 3.92(0.18) 4.16(0.18)
 Exercise 2.95(0.18) 3.10(0.17) 3.23(0.17) 3.42(0.19) 2.75(0.18) 3.09(0.17)
 Guarding 3.59(0.15) 3.28(0.15) 3.44(0.16) 3.41(0.17) 3.75(0.15) 3.52(0.15)
 Persistence 4.02(0.16) 3.95(0.15) 4.01(0.16) 4.16(0.17) 3.81(0.16) 3.92(0.16)
 Relaxation 2.35(0.16) 2.42(0.16) 2.56(0.17)Δb 2.55(0.17) 2.38(0.16) 2.87(0.16)
 Resting 3.89(0.17) 3.74(0.17) 3.74(0.18) 3.70(0.19) 3.97(0.17) 3.84(0.17)
 Social 2.82(0.18) 3.01(0.17) 2.81(0.18) 2.96(0.19) 2.90(0.18) 3.15(0.18)
AIMS
 Physical 2.82(0.14) 2.71(0.15) 2.67(0.15) 2.75(0.15) 2.85(0.14) 2.75(0.15)
 Symptom 5.78(0.21) 5.24(0.22) 5.17(0.24) 5.30(0.23) 5.76(0.21) 5.16(0.23)
 Affect 4.10(0.17) 4.03(0.18) 3.88(0.18) 3.90(0.19) 4.42(0.17) 4.12(0.19)
 Social 5.43(0.17) 5.36(0.17) 5.36(0.18) 5.20(0.18) 5.27(0.18) 5.26(0.18)
 Work 2.93(0.25) 2.13(0.25) 2.43(0.31) 2.28(0.28) 2.65(0.27) 2.46(0.26)
PGIC 3.55(0.08)a 3.50(0.10)b 3.29(0.10)c 3.11(0.08)a

Pairwise post hoc contrasts between experimental and control groups at each time point for PGIC and for the mean change in differences for all other outcomes. Least square means are presented rather than unadjusted means because we used mixed models to incorporate covariance among repeated measures.

abc

Unique superscripts indicate significant pairwise post hoc tests (p < 0.05)

Δ

change for condition-BY-time compared to baseline

ASEQ = Arthritis Self-Efficacy Questionnaire; AIMS = Arthritis Impact Measurement Scale; BPI = Brief Pain Inventory; CPCI = Chronic Pain Coping Inventory; DASS = Depression