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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: J Pain Symptom Manage. 2014 Apr 21;48(4):558–568. doi: 10.1016/j.jpainsymman.2013.10.025

Table 4.

Odds Ratios and 95% Confidence Interval for Influencing Variables of Subgroup Membership

Time 1(n = 276)a Time 2 (n = 276)
Comparison versus reference HPHF vs. LPLF LPHF vs. LPLF HPHF vs. LPHF HPHF vs. LPLF
Site A 6.57 (0.70, 61.33) 9.04 (0.86, 94.64) 0.73 (0.24, 2.22) 4.44 (0.50, 39.81)
Site B 7.69 (0.83, 71.14) 7.38 (0.71,76.12) 1.04 (0.30, 3.69) 3.09 (0.25, 38.57)
Age 0.77 (0.50, 1.16) 0.83 (0.53,1.29) 0.93 (0.69, 1.26) 0.96 (0.58, 1.58)
Cancer type (breast vs. others) 1.94 (0.47,8.11) 4.78 (0.98, 23.24) 0.41 (0.17,0.94) 1.45 (0.37, 5.68)
Disease stage (stage I &II vs.III &IV) 0.96 (0.48, 1.91) 1.02 (0.48, 2.15) 0.94 (0.63, 1.41) 1.74 (0.96,3.16)
Comorbid-arthritis 2.69 (0.59, 12.30) 1.94 (0.28, 13.37) 1.39 (0.44, 4.21) 3.30 (0.45, 24.01)
Comorbid- hypertension 0.72 (0.17,3.06) 0.64 (0.11,3.62) 1.13 (0.50, 2.60) 5.29 (1.49, 18.84)*
Hemoglobin level 0.92 (0.59,1.43) 0.93 (0.57,1.51) 0.99 (0.81, 1.21) 0.87 (0.61, 1.23)
Previous surgery (yes vs.no) 1.64 (0.40,6.61) 2.89 (0.61,13.70) 0.56 (0.24, 1.30) 0.72 (0.14, 3.47)
Depressed mood 57.89 (6.59, 509.09)*** 67.22 (7.72, 585.13)*** 0.86 (0.56, 1.33) 4.33 (1.82, 10.26)**
Time lapse since the first CTX (43–46 vs. 57–60 day) 0.14 (0.04, 0.47)**
Symptom managementb (yes vs.no) 1.45 (0.52, 4.02)
Employment statusc (employed vs. un-employed) 1.26 (0.40, 3.96)

Note.

a

Bonferroni correction was done for multiple comparisons.

b

At Time 1, the intervention was not given and thus this variable was not entered in the model at Time 1.

c

Employment status interacted with the intervention effect on the secondary outcome of pain at Time 2 in the parent study and thus, this variable was included in the model at Time 2 model estimation;

HPHF = high pain and high fatigue subgroup; LPLF = low pain and low fatigue subgroup; LPHF = low pain and high fatigue subgroup;

*

p < .05.

**

p < .01.

***

p < .0001.

An odds ratio >1 would mean that the higher-coded category (or higher values in a continuous variable) was associated with the greater odds of being in a given subgroup as opposed to the reference subgroup. A p-value < .05 indicated that the effect of a variable was significant after controlling for the rest of the variables in a model.