Hi, jspotila and the group.
This sounds like a pretty comprehensive questionnaire, though I haven't seen it all. I'm glad the CFIDS Assn is doing this survey.
In 2004, I reviewed the available risk factor studies for CFS, and was able to conclude that all of the risk factors that were reported to be common were stressors known to place demands on glutathione. It will be interesting to see if this survey comes out that way, too. Here are some pages from my 2004 AACFS poster paper that summarized the risk factors from the studies up to that time. The full paper, with references, can be found at www.cfsresearch.org
"IN THE GENERAL POPULATION, WHAT FACTORS OR CONDITIONS ARE KNOWN TO CAUSE DECREASES IN INTRACELLULAR GLUTATHIONE CONCENTRATIONS?
These factors and conditions can be divided into three groups:
• The first group is made up of those that (1) lower the rate of GSH synthesis or the rate of reduction of GSSG to GSH, or (2) raise the rate of export of GSH from cells, or (3) lead to loss of GSH from the scavenging pathway. This group includes the following: genetic defects , elevated adrenaline secretion [16-20] due to various types of stress, deficient diet  or fasting , surgical trauma [21,22], burns , and morphine .
• The second group is comprised of toxins that conjugate GSH and remove it from the body , such as organophosphate pesticides, halogenated solvents, tung oil (used on furniture), acetaminophen and some types of inhalation anesthesia.
• The third group is comprised of conditions that raise the production rates of reactive oxygen species high enough to produce oxidative stress, causing cells to export GSSG. These include strenuous or extended exercise , infections (producing leukocyte activation) , toxins that produce oxidizing free radicals during Phase I detoxication by cytochrome P450 enzymes , ionizing radiation , iron overload , and ischemia--reperfusion events (such as stroke, cardiac arrest, subarachnoid hemorrhage, and head trauma) .
STRESS, DISTRESS, AND STRESSORS
• For purposes of this presentation, stressors are defined in the broad sense as events, circumstances or conditions that place demands on a person and tend to move his or her body out of allostatic balance. Allostasis is similar to homeostasis, but allows for changes in the set-point over time to match life circumstances . Stressors can be classified as physical, chemical, biological, or psychological/emotional.
• Stress is the state that results from the presentation of such demands. Selye  defined stress as "the state manifested by a specific syndrome which consists of all the nonspecifically-induced changes within a biologic system." Although Selye emphasized the nonspecifically-induced responses, the body also exhibits specific responses that depend on the type of stress .
• Stress can be of a beneficial or a destructive nature. Distress is the destructive type of stress .
• The perceived stress that people experience depends not only on the stressors to which they are subjected, but also on "their appraisals of the situation and cognitive and emotional responses to it." 
• A person's history of both the occurrence of stressors and of the degree of perceived stress can be evaluated by structured interviews, and this has been done in a number of studies of CFS risk factors [34-45].
IS THERE EVIDENCE FOR HIGHER OCCURRENCE OF STRESSORS IN CFS PATIENTS PRIOR TO ONSET THAN IN HEALTHY NORMAL CONTROLS?
YES. The types of stressors found to have higher occurrence in one or more CFS risk factor studies [34-45] include the following:
• Physical: Aerobic exercise (especially of long duration), physical trauma (especially motor vehicle accidents) and surgery (including anesthesia).
• Chemical: Exposure to toxins such as organophosphate pesticides, solvents and ciguatoxin.
• Biological: Infections, immunizations, blood transfusions, insect bites, allergic reactions, and eating or sleeping less.
Stressful life events, including death of a spouse, close family member or close friend; recent marriage; troubled or failing marriage, separation, or divorce; serious illness in immediate family; job loss, starting new job, or increased responsibility at work; and residential move.
Difficulties, including ongoing problems with relationships, persistent work problems or financial problems, mental or physical violence, overwork, extreme sustained activity, or "busyness."
Dilemmas "A dilemma is a situation in which a person is challenged to choose between two equally undesirable alternatives." Choosing inaction in response to a dilemma leads to further negative consequences.
Problems in childhood, including significant depression or anxiety, alcohol or other drug abuse, and/or physical violence in parents or other close family members; physical, sexual or verbal abuse, low self-esteem and chronic tension or fighting in the family.
IS THERE EVIDENCE FOR HIGHER PERCEIVED STRESS IN CFS PATIENTS PRIOR TO ONSET, COMPARED TO HEALTHY CONTROLS?
YES. Three studies [34, 37, 38] found that CFS patients rated their level of perceived stress prior to onset higher than did healthy, normal controls for a similar period of time.
IS IT SURPRISING THAT GLUTATHIONE BECAME DEPLETED IN MANY CFS PATIENTS?
NO. In view of the strong correspondence between the results of the CFS risk factor studies and the known GSH depletors, it is not surprising. It appears that the CFS patients who were studied had undergone a variety of factors and conditions that are known to deplete glutathione, and had also experienced high levels of perceived stress as a result."