Derived from the original 42-item Knee injury and Osteoarthritis Outcome Score (KOOS), KOOS-12 reduces respondent burden by 70% from the original KOOS while providing scale scores for knee-specific Pain, Function and QOL, along with a summary measure of overall knee impact. The KOOS sub scales are scored using the method of summated ratings and transformed to range from 0 to 100, with 0 representing extreme knee problems and 100 representing no knee problem. The KOOS-12 Summary knee impact score is calculated as the average of the KOOS-12 Pain, KOOS-12 Function and KOOS-12 QOL scale scores. It also ranges from 0 to 100, where 0 is the worst possible and 100 is the best possible score.

The three subscales of KOOS-12 are scored separately: KOOS Pain (4 items); KOOS Function (4 items); KOOS QoL (4 items). A Likert scale is used and all items have five possible answer options scored from 0 (No Problems) to 4 (Extreme Problems) and each of the three scores is calculated as the sum of the items included. Scores are transformed to a 0-100 scale, with zero representing extreme knee problems and 100 representing no knee problems.

The three subscales of KOOS-12 are scored separately: KOOS Pain (4 items); KOOS Function (4 items); KOOS QoL (4 items). A Likert scale is used and all items have five possible answer options scored from 0 (No Problems) to 4 (Extreme Problems) and each of the three scores is calculated as the sum of the items included. Scores are transformed to a 0-100 scale, with zero representing extreme knee problems and 100 representing no knee problems.

The three subscales of KOOS-12 are scored separately: KOOS Pain (4 items); KOOS Function (4 items); KOOS QoL (4 items). A Likert scale is used and all items have five possible answer options scored from 0 (No Problems) to 4 (Extreme Problems) and each of the three scores is calculated as the sum of the items included. Scores are transformed to a 0-100 scale, with zero representing extreme knee problems and 100 representing no knee problems.

EuroQol-5 Dimensions (EQ-5D) consists of 2 dimensions, the EQ-5D descriptive system and the EQ visual analogue scale (EQ VAS). The descriptive system comprises five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 5 levels: no problems, slight problems, moderate problems, severe problems and extreme problems. The patient is asked to indicate his/her health state by selecting the most appropriate statement in each of the five dimensions. This decision results in a 1-digit number that expresses the level selected for that dimension. The digits for the five dimensions can be combined into a 5-digit number that describes the patient's health state. The EQ VAS records the patient's self-rated health on a vertical visual analogue scale, where the endpoints are labelled 'The best health you can imagine' and 'The worst health you can imagine'. The VAS will be used as a quantitative measure of health outcome.

EuroQol-5 Dimensions (EQ-5D) consists of 2 dimensions, the EQ-5D descriptive system and the EQ visual analogue scale (EQ VAS). The descriptive system comprises five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 5 levels: no problems, slight problems, moderate problems, severe problems and extreme problems. The patient is asked to indicate his/her health state by selecting the most appropriate statement in each of the five dimensions. This decision results in a 1-digit number that expresses the level selected for that dimension. The digits for the five dimensions can be combined into a 5-digit number that describes the patient's health state. The EQ VAS records the patient's self-rated health on a vertical visual analogue scale, where the endpoints are labelled 'The best health you can imagine' and 'The worst health you can imagine'. The VAS will be used as a quantitative measure of health outcome.

EuroQol-5 Dimensions (EQ-5D) consists of 2 dimensions, the EQ-5D descriptive system and the EQ visual analogue scale (EQ VAS). The descriptive system comprises five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 5 levels: no problems, slight problems, moderate problems, severe problems and extreme problems. The patient is asked to indicate his/her health state by selecting the most appropriate statement in each of the five dimensions. This decision results in a 1-digit number that expresses the level selected for that dimension. The digits for the five dimensions can be combined into a 5-digit number that describes the patient's health state. The EQ VAS records the patient's self-rated health on a vertical visual analogue scale, where the endpoints are labelled 'The best health you can imagine' and 'The worst health you can imagine'. The VAS will be used as a quantitative measure of health outcome.

EuroQol-5 Dimensions (EQ-5D) consists of 2 dimensions, the EQ-5D descriptive system and the EQ visual analogue scale (EQ VAS). The descriptive system comprises five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 5 levels: no problems, slight problems, moderate problems, severe problems and extreme problems. The patient is asked to indicate his/her health state by selecting the most appropriate statement in each of the five dimensions. This decision results in a 1-digit number that expresses the level selected for that dimension. The digits for the five dimensions can be combined into a 5-digit number that describes the patient's health state. The EQ VAS records the patient's self-rated health on a vertical visual analogue scale, where the endpoints are labelled 'The best health you can imagine' and 'The worst health you can imagine'. The VAS will be used as a quantitative measure of health outcome.

Measurement for depression and anxiety rated on a 4 point Likert-type scale. 0 refers to 'Not at all', 3 refers 'Nearly everyday'. Total score is determined by adding together the scores of each of the 4 items. Scores are rated as normal (0-2), mild (3-5), moderate (6-8), and severe (9-12).

Total score ≥3 for first 2 questions suggest anxiety. Total score ≥3 for last 2 questions suggest depression.

Measurement for depression and anxiety rated on a 4 point Likert-type scale. 0 refers to 'Not at all', 3 refers 'Nearly everyday'. Total score is determined by adding together the scores of each of the 4 items. Scores are rated as normal (0-2), mild (3-5), moderate (6-8), and severe (9-12).

Total score ≥3 for first 2 questions suggest anxiety. Total score ≥3 for last 2 questions suggest depression.

Measurement for depression and anxiety rated on a 4 point Likert-type scale. 0 refers to 'Not at all', 3 refers 'Nearly everyday'. Total score is determined by adding together the scores of each of the 4 items. Scores are rated as normal (0-2), mild (3-5), moderate (6-8), and severe (9-12).

Total score ≥3 for first 2 questions suggest anxiety. Total score ≥3 for last 2 questions suggest depression.

Measurement for depression and anxiety rated on a 4 point Likert-type scale. 0 refers to 'Not at all', 3 refers 'Nearly everyday'. Total score is determined by adding together the scores of each of the 4 items. Scores are rated as normal (0-2), mild (3-5), moderate (6-8), and severe (9-12).

Total score ≥3 for first 2 questions suggest anxiety. Total score ≥3 for last 2 questions suggest depression.

Measures the pain intensity and interference level using a three-item scale. Scale of 0 to 10 is used for each item. 0 refers 'no pain', 10 refers 'worse pain'. Add the responses to the three questions, then divide by three to get a mean score (out of 10) on overall impact of points.

Measures the pain intensity and interference level using a three-item scale. Scale of 0 to 10 is used for each item. 0 refers 'no pain', 10 refers 'worse pain'. Add the responses to the three questions, then divide by three to get a mean score (out of 10) on overall impact of points.

Measures the pain intensity and interference level using a three-item scale. Scale of 0 to 10 is used for each item. 0 refers 'no pain', 10 refers 'worse pain'. Add the responses to the three questions, then divide by three to get a mean score (out of 10) on overall impact of points.

Measures the pain intensity and interference level using a three-item scale. Scale of 0 to 10 is used for each item. 0 refers 'no pain', 10 refers 'worse pain'. Add the responses to the three questions, then divide by three to get a mean score (out of 10) on overall impact of points.

1 question survey to understands patient physical activity level from a scale of 1 (wholly inactive) to 10 (regular participation in impact sports).

1 question survey to understands patient physical activity level from a scale of 1 (wholly inactive) to 10 (regular participation in impact sports).

1 question survey to understands patient physical activity level from a scale of 1 (wholly inactive) to 10 (regular participation in impact sports).

1 question survey to understands patient physical activity level from a scale of 1 (wholly inactive) to 10 (regular participation in impact sports).

Patient will be asked to rate thier overall recovery on a 7-point Likert scale. 1 refers to 'Very much improved'; 7 refers to 'Very much deteriorated'.

Patient will be asked to rate thier overall recovery on a 7-point Likert scale. 1 refers to 'Very much improved'; 7 refers to 'Very much deteriorated'.

Patient will be asked to rate thier overall recovery on a 7-point Likert scale. 1 refers to 'Very much improved'; 7 refers to 'Very much deteriorated'.

A single-question used to assess patient's satisfaction in the treatment. Response will be either yes or no. "When you think of your knee function, will you consider your current condition as satisfying? By knee function, you should take into account your activities of daily living, sport and recreational activities, your pain and other symptoms and your quality of life."

A single-question used to assess patient's satisfaction in the treatment. Response will be either yes or no. "When you think of your knee function, will you consider your current condition as satisfying? By knee function, you should take into account your activities of daily living, sport and recreational activities, your pain and other symptoms and your quality of life."

A single-question used to assess patient's satisfaction in the treatment. Response will be either yes or no. "When you think of your knee function, will you consider your current condition as satisfying? By knee function, you should take into account your activities of daily living, sport and recreational activities, your pain and other symptoms and your quality of life."

Patient who answers 'no' to PASS will be asked to determine if they consider the treatment to have failed. Response will be 'yes' or 'no'. "Would you consider your current state as being so unsatisfactory that you consider the treatment to have failed?"

Patient who answers 'no' to PASS will be asked to determine if they consider the treatment to have failed. Response will be 'yes' or 'no'. "Would you consider your current state as being so unsatisfactory that you consider the treatment to have failed?"

Patient who answers 'no' to PASS will be asked to determine if they consider the treatment to have failed. Response will be 'yes' or 'no'. "Would you consider your current state as being so unsatisfactory that you consider the treatment to have failed?"

Objective measurement of patient's analgesics average weekly consumption based on the quantity multiplied by the category of analgesic medication according to the WHO pain relief ladder (1 point - non-opioid, 2 points - mild opioid, 3 points - strong opioid) in order to calculate a total score.

Objective measurement of patient's analgesics average weekly consumption based on the quantity multiplied by the category of analgesic medication according to the WHO pain relief ladder (1 point - non-opioid, 2 points - mild opioid, 3 points - strong opioid) in order to calculate a total score.

Objective measurement of patient's analgesics average weekly consumption based on the quantity multiplied by the category of analgesic medication according to the WHO pain relief ladder (1 point - non-opioid, 2 points - mild opioid, 3 points - strong opioid) in order to calculate a total score.

This questionnaire is to assess the eating habits and dietary choices over a period of time. It consists of 9 questions looking at the frequency of consumption in these categories - sugar, fats, fruits and vegetables, and wholegrains - and the degree of mindfulness in eating.

This questionnaire is to assess the eating habits and dietary choices over a period of time. It consists of 9 questions looking at the frequency of consumption in these categories - sugar, fats, fruits and vegetables, and wholegrains - and the degree of mindfulness in eating.

This questionnaire is to assess the eating habits and dietary choices over a period of time. It consists of 9 questions looking at the frequency of consumption in these categories - sugar, fats, fruits and vegetables, and wholegrains - and the degree of mindfulness in eating.

This questionnaire is to assess the eating habits and dietary choices over a period of time. It consists of 9 questions looking at the frequency of consumption in these categories - sugar, fats, fruits and vegetables, and wholegrains - and the degree of mindfulness in eating.

Cost questionnaire

Cost questionnaire

Cost questionnaire

This 8-items shortened version of the original 20-item instrument includes two items from the pain subscale, four items from the other symptoms subscale, and two new items that relate to preventing pain and fatigue from interfering with daily activities. The questionnaire measures patients' confidence on a scale of 1 (very uncertain) to 10 (very certain) in their ability to manage symptoms of arthritis. Responses were averaged to yield a score ranging from 1 to 10, the higher number being having greater self-efficacy.

This 8-items shortened version of the original 20-item instrument includes two items from the pain subscale, four items from the other symptoms subscale, and two new items that relate to preventing pain and fatigue from interfering with daily activities. The questionnaire measures patients' confidence on a scale of 1 (very uncertain) to 10 (very certain) in their ability to manage symptoms of arthritis. Responses were averaged to yield a score ranging from 1 to 10, the higher number being having greater self-efficacy.

This 8-items shortened version of the original 20-item instrument includes two items from the pain subscale, four items from the other symptoms subscale, and two new items that relate to preventing pain and fatigue from interfering with daily activities. The questionnaire measures patients' confidence on a scale of 1 (very uncertain) to 10 (very certain) in their ability to manage symptoms of arthritis. Responses were averaged to yield a score ranging from 1 to 10, the higher number being having greater self-efficacy.

This 8-items shortened version of the original 20-item instrument includes two items from the pain subscale, four items from the other symptoms subscale, and two new items that relate to preventing pain and fatigue from interfering with daily activities. The questionnaire measures patients' confidence on a scale of 1 (very uncertain) to 10 (very certain) in their ability to manage symptoms of arthritis. Responses were averaged to yield a score ranging from 1 to 10, the higher number being having greater self-efficacy.

This scale will be used to assess fear of pain. It is based on the widely used Tampa Scale of Kinesiophobia and contains 6 questions that evaluate fear of pain, movement and re-injury. The patient is asked to indicate 1 (strongly disagree), 2 (disagree), 3 (agree) or 4 (strongly agree) for each item. The higher number represents increasing fear.

This scale will be used to assess fear of pain. It is based on the widely used Tampa Scale of Kinesiophobia and contains 6 questions that evaluate fear of pain, movement and re-injury. The patient is asked to indicate 1 (strongly disagree), 2 (disagree), 3 (agree) or 4 (strongly agree) for each item. The higher number represents increasing fear.

This scale will be used to assess fear of pain. It is based on the widely used Tampa Scale of Kinesiophobia and contains 6 questions that evaluate fear of pain, movement and re-injury. The patient is asked to indicate 1 (strongly disagree), 2 (disagree), 3 (agree) or 4 (strongly agree) for each item. The higher number represents increasing fear.

This scale will be used to assess fear of pain. It is based on the widely used Tampa Scale of Kinesiophobia and contains 6 questions that evaluate fear of pain, movement and re-injury. The patient is asked to indicate 1 (strongly disagree), 2 (disagree), 3 (agree) or 4 (strongly agree) for each item. The higher number represents increasing fear.

This 7-items shame score aim to find out the participants' shame feelings derived from chronic illness-related experiences. Each item is rated on a 5-point Likert (0: Never True; 4: Always True). Higher scores reveal higher levels of shame specifically associated with the experience of having an illness and/or its symptomatology.

This 7-items shame score aim to find out the participants' shame feelings derived from chronic illness-related experiences. Each item is rated on a 5-point Likert (0: Never True; 4: Always True). Higher scores reveal higher levels of shame specifically associated with the experience of having an illness and/or its symptomatology.

This 7-items shame score aim to find out the participants' shame feelings derived from chronic illness-related experiences. Each item is rated on a 5-point Likert (0: Never True; 4: Always True). Higher scores reveal higher levels of shame specifically associated with the experience of having an illness and/or its symptomatology.

This 7-items shame score aim to find out the participants' shame feelings derived from chronic illness-related experiences. Each item is rated on a 5-point Likert (0: Never True; 4: Always True). Higher scores reveal higher levels of shame specifically associated with the experience of having an illness and/or its symptomatology.

This scale is a 12-item questionnaire to identify the patients' perceived adequacy of social support from three sources: family, friends, & significant other. Each item is scored on a scale from 1 to 7 (0 = very strongly disagree, 7 = very strongly agree).

This scale is a 12-item questionnaire to identify the patients' perceived adequacy of social support from three sources: family, friends, & significant other. Each item is scored on a scale from 1 to 7 (0 = very strongly disagree, 7 = very strongly agree).

This scale is a 12-item questionnaire to identify the patients' perceived adequacy of social support from three sources: family, friends, & significant other. Each item is scored on a scale from 1 to 7 (0 = very strongly disagree, 7 = very strongly agree).

This scale is a 12-item questionnaire to identify the patients' perceived adequacy of social support from three sources: family, friends, & significant other. Each item is scored on a scale from 1 to 7 (0 = very strongly disagree, 7 = very strongly agree).

5-items questionnaire to assess the relationship of one's environment to the health outcomes.

5-items questionnaire to assess the relationship of one's environment to the health outcomes.

5-items questionnaire to assess the relationship of one's environment to the health outcomes.

5-items questionnaire to assess the relationship of one's environment to the health outcomes.

2-items questionnaire to find out the effects of having religion/spiritual beliefs on one's health outcomes.

2-items questionnaire to find out the effects of having religion/spiritual beliefs on one's health outcomes.

2-items questionnaire to find out the effects of having religion/spiritual beliefs on one's health outcomes.

2-items questionnaire to find out the effects of having religion/spiritual beliefs on one's health outcomes.

This 12 items self-reported questionnaire measures patient's pain and level of function. Each item is rated from least to most difficultly or severity. The scoring system ranges from 0 to 4 for each question with 4 representing maximum function and 0 representing poorest function. The lowest (worse) score is 0, and the highest (best) score is 48.

The 3 items patient-reported portion (Function Score) of the KSS covers the patient's mobility (walking distance and stairs) and potential walking aids. Score range of the KSS is from 0 to 100 points for each portion, with higher scores indicating better outcome.