Hospital Anxiety & Depression Scale (HADS)
The severity of lung cancer patients' anxiety and depression will be measured by the self-reporting HADS. The 14 items of HADS consists of two subscales, include 7 items anxiety and 7 items depression. The score of all items ranges from 0 (not at all) to 3 (always) and the total score of each subscale arerange from 0 to 21, a higher score indicates a higher level of anxiety or depression. Satisfactory psychometrics of the HADS has been shown in cancer populations in Taiwan (Chen et al. 2000).
Fear of Recurrence Inventory
The FoR-C is a Chinese version of the original FoR questionnaire. The FoR questionnaire consists of six statements with a five-point response scale from not at all (1), a little, sometimes (2), a lot , and all the time) and one statement with a response scale from 0 (not at all) to 10 (a great deal). The summary of FoR was range from 6 to 40. Higher score indicates a higher level of fear of recurrence. The significance of the FoR was indicated by patients' responses 'a lot' or 'all the time' for the first six statements and the score of 7-10 for the last item, in which case. Current study will use the same approach to determine the cut-off point of the FoR.
Body Image Scale (BIS)
The Body Image Scale (BIS) was developed to assess body image. The 10-item BIS comprised three subscales: affective (e.g. feeling feminine/masculine, physically attractive, or sexually attractive), behavioral (e.g. find it hard to look at youeself naked, avoid people because of appearance), and cognitive (e.g. satisfied with appearance, or with scar). Five items were presented positively and the others were presented negatively. Each item was scored from 0 (not at all) to 3 (very much). The higher overall summary score indicated more symptoms and distress. (Hopwood, Fletcher, Lee, & Al Ghazal, 2001) The BIS has been translated to Chinese and validated to be reliable in cancer patients in Taiwan. Cronbach's α was 0.84-0.94. (Chen, Liao, Chen, Chan, & Chen, 2012; Chen et al., 2017; Hung et al., 2017).
Fatigue Severity Inventory
The Fatigue Symptom Inventory (FSI) was developed to assess fatigue in patients with cancer. It's a 14-item self-reported measure designed to assess the intensity (four items), duration (two items), daily pattern (one item) and inference (seven items) of fatigue. The Items assessing intensity and interference are scored on an 11-point Likert-type scale (0 = not at all fatigued/ no inference at all; 10 = as fatigued as I could be/ extreme inference). Two items assessing duration are based on the number of days in the past week patients felt fatigue (0 - 7 days) and the percent of time each day fatigue was present (0 = none of the day; 10 = the entire day). (Hann, Denniston, & Baker, 2000; Hann et al., 1998) The Chinese version of FSI has been validated in patients with cancer and its Cronbach's α was 0.92. (Chou, Lai, Wang, & Shun, 2017; Shun, Beck, Pett, & Berry, 2006; Shun, Beck, Pett, & Richardson, 2007).
Pittsburgh's Sleep Index
The PSQI was developed by Buysee in 1989, is used to assess sleep quality on participants' sleep experiences during the past week (Buysse, Reynolds, Monk, Berman, & Kupfer, 1989). Iincluding seven component scores which are sleep duration, sleep disturbances, sleep latency, daytime functioning, habitual sleep efficiency, sleep quality, and sleep medication. The total PSQI score range is from 0 to 21, and the higher the worse of the sleep. If the total PSQI score is more than 5, the result means the person has sleep problems (Buysse et al., 1989; He et al., 2015; Van Onselen et al., 2010). In Chinese-PSQI, Cronbach's a coefficient for the hospital sample and test-retest reliability were 0.83 and 0.85, respectively (Tsai et al., 2005). Normal and problem sleepers (PSQI total score≦5 or >5) had 90% of sensitivity and 87% of specificity in original questionnaire (Buysse et al., 1989) and had 98% of sensitivity and 55% of specificity in Chinese version questionnaire (Tsai et al., 2005).
Brief Supportive Care Needs Survey (SCNS-9)
The unmet needs of lung cancer patient will be measured by 9 items SCNS. It consists of 5 domains, include psychological, health system and information, daily living, patient care and sexuality domain. Response options "No need, not applicable (1); No need, satisfied (2); Low need (3); Moderate need (4); High need (5). The sum of item scores within each domain will be calculated and the scores will be transformed to a standardized score 0 to 100, higher score indicate more unmet needs (Girgis, Stojanovski, Boyes, King, & Lecathelinais, 2011). The higher scores representing more unmet needs (McElduff, Boyes, Zucca, & Girgis, 2004). A previous study reported the construct reliability and construct validity of this instrument (Girgis et al, 2011). The Chinese SCNS34 has acceptable psychometric properties in previous lung cancer studies (Liao et al., 2011; Shun et al., 2014).
Short Form 12 (SF-12)
The Short Form-12 (SF-12) Health Survey is a shortened version of the 36-item Short Form Health Survey with 12 items. It's a generic and validated self-reported health-related quality-of-life questionnaire. The SF-12 consists of eight-scale scores and two summary measures: physical and mental component summary measures (PCS and MCS). It includes two items on physical functioning, two items on role physical, one item on bodily pain, one item on general health, one item on vitality, one item on social functioning, two items on role emotional, and two items on mental health. (Busija et al., 2011; Fong et al., 2010; Ware et al., 1996) The SF-12 scores are calculated by summing the raw scores and transform to a 0-100 scale. The higher score indicated better health. (Busija et al., 2011) The previous study reported Cronbach's α for the Chinese version of the PCS was 0.62-0.83 and the MCS was 0.75-0.76. (Chou, Lai, Wang, & Shun, 2017; Fong et al., 2010).
Symptom Severity Scale (SSS)
Symptom Severity Scale was developed to assess patients' symptom severity, and it will be modified to assess disease and treatment-related symptoms in DTC patients. Each item of this 23-item SSS is rated from 0 to 10, with 0 indicating "no such symptom at all" and 10 indicating "extreme severity of the symptom." The SSS has been validated as a reliable scale (Chen et al., 2010; Chen et al., 2013).
Impact of Event Scale-Revised (IES-R)
The IES is developed by Horowitz et al. (1979) and it was further revised. The IES-R can directly assess the impact of cancer to patients and it is based on mechanisms of people's dealing with calamitous life events. This instrument includes two psychological dimensions: intrusion and avoidance, and it has good psychometrics characteristics. The IES is scored on a 0-5 scale with the higher the score, the more the intrusion and the greater the avoidant tendency or avoidance (Sundin & Horowitz, 2003).
Illness Perception Questionnaire (IPQ-M)
The Illness Perception Questionnaire (IPQ) was developed by Broadbent, Petrie, Main and Weinman (2006) and it is for measuring patients' perception about their illness. Also the IPQ has been proven a good psychometric measurement. The IPQ was later modified by Grunfeld, and Cooper (2010) to assess cancer patients' concerns, perception and barriers of their return to work. The 26-item IPQ-M which consists of two major dimensions: (1) the impacts of cancer and its treatment on work, and (2) illness perceptions in relation to work was an 8-point Likert's scale scoring from 0 to 7 with the higher score indicating more concerns or barriers about RTW.