. Author manuscript; available in PMC: 2018 Feb 1.

Published in final edited form as: J Cancer Surviv. 2016 Aug 25;11(1):111–118. doi: 10.1007/s11764-016-0567-y

Table 2.

Health-related quality of life: NSABP LTS-01

Instrument	LTS-01 (Mean [SD])	Reference (Mean [SD])
Physical Health^b
SF-12 Summary Physical Component Scale (PCS)^a	49.5 (9.9)	43.7 (11.0)
SF-36 Vitality Scale^a	67.1 (20.7)	59.9 (22.1)
Fatigue Symptom Inventory:^a Average Fatigue	2.7 (2.2)	2.3 (1.8)
Instrumental Activities of Daily Living (IADL)	7.9 (0.8)	4.2 (range 0–8)
Mental Health^c
SF-12 Summary Mental Component Scale (MCS)^a	55.6 (7.7)	52.1 (9.5)
Life Orientation Test: Optimism^a	18.9 (4.6)	21.2 (4.3)
Impact of Cancer (IOC): Positive Impact Scale	3.7 (0.5)	3.6 (0.7)
Impact of Cancer (IOC): Negative Impact Scale	2.3 (0.6)	2.5 (0.7)

p < 0.05

Higher scores on the SF-12 Summary Physical Component Scale, SF-36 Vitality Scale, and IADL indicate better physical health. Higher scores on the Fatigue Symptom Inventory indicate increasing level of fatigue.

Higher scores on the SF-12 Summary Mental Component Scale indicate better mental health. Higher scores on the Life Orientation Test: Optimism indicate more optimism. Higher scores on the IOC Positive Impact Scale and lower scores on the Negative Impact Scale indicate better mental health