Table 1.
Independent and dependent variables definitions
| Objective 1. Determine which telecommuting and individual factors associated with headache and neck pain occurrence in telecommuters. | ||
| Independent variables | Definitions | Time of data collection |
| Height | Height (m) | Baseline |
| Weight | Weight (kg) | |
| BMI | BMI (kg/m2) | |
| Age | Age (years) | |
| Gender | M: F: O | |
| HIT-6 | Headache-related disability | |
| NBQ | Neck pain-related disability | |
| Baseline headache frequency | Number of headache episodes during the 7 days prior to enrollment | |
| Baseline headache intensity | Mean headache intensity during the 7 days prior to enrollment | |
| Baseline neck pain frequency | Number of headache episodes during the 7 days prior to enrollment | |
| Baseline neck pain intensity | Mean neck pain intensity during the 7 days prior to enrollment | |
| Home workstation | Presence of one designated place at home where the participant was telecommuting | |
| Baseline headset wearing |
Having wore a headset during the 7 days prior to enrollment (yes or no question) |
|
| Headset type | In-ear or over-ear headset | |
| Follow-up headset wearing |
Having wore a headset at least one time during the follow-up (yes or no question) |
Follow-up |
| Follow-up telecommuting hours | Mean telecommuting hours based on daily survey | |
| Follow-up headset wearing hours | Mean headset wearing hours based on daily survey | |
| Dependent variables | Definitions | |
| Follow-up headache occurrence |
Having at least one headache episode during the follow-up (yes or no question) |
Follow-up |
| Follow-up neck pain occurrence |
Having at least one neck pain episode during the follow-up (yes or no question) |
|
| Objective 2. Evaluate the impact of wearing a headset on headache and neck pain intensity in telecommuters. | ||
| Independent variable | Definition | Time of data collection |
| Follow-up headset wearing |
Having wore a headset at least one time during the follow-up (yes or no question) |
Follow-up |
| Dependent variables | Definitions | |
| Follow-up headache intensity | Mean headache intensity based on the number of headache episodes during the follow-up | Follow-up |
| Follow-up neck pain intensity | Mean neck pain intensity based on the number of neck pain episodes during the follow-up | |
BMI = Body Mass Index, M = Male, F = female, O = other gender (not identifying as either male of female), HIT-6 = 6-Item Headache Impact Test, NBQ = Neck Bournemouth Questionnaire