1. XXXXXXXX Xxxxx
XXXXX Xxxxxx
XXXXXX Xxxxxx
The Effect of Varying Levels of Outdoor-Air Supply on the Symptoms of Sick Building Syndrome
BCEE 6961
Teacher : Dr. O.A. Pekau
Dr. James Hanley
2015

2. The Effect of Varying Levels of Outdoor-Air Supply on the Symptoms of Sick Building Syndrome
Study Conducted
Conducted by Massachusetts Medical Society NO, by the au’s. Medical Society PUBLISHES NEJM
Duration of 6 Weeks in 4 Buildings…
Opposite Ventilation Rates in 2 Buildings
Ventilation Increased for 1st Week & Decreased for 2nd
Reverse the prev. 2 bullets
20 or 50 cu.ft. per minute per person
1546 Participants, serving their own comparison
Carbon dioxide concentration around 600 or 1000ppm
V short Intro helpful to situate the study. WHY was study done?

3. MEASUREMENTS During the Study
The Effect of Varying Levels of Outdoor-Air Supply on the Symptoms of Sick Building Syndrome
MEASUREMENTS During the Study
Obtaining Feedback
1. Carbon dioxide levels 8 to 12 sites per floor
Levels taken Mid Afternoon at pts. nearest to Participants
2. Questionnaire Were Done administered to workers
3. Levels of formaldehyde, nitrogen oxides,
carbon monoxide, total airborne dust etc were checked

4. After the Study ??? Obtained Feedback
The Effect of Varying Levels of Outdoor-Air Supply on the Symptoms of Sick Building Syndrome
After the Study ???
Obtained Feedback
Participants proposed difficulties ??? Wording is odd
Irritation in eyes, nose and throat what about it ? Wasn’t that assessed DURING study
More on the days of High Ventilation ??? Seems like a result, but what was more?
Logistic Regression was used to avoid odds ???? VERY ODD .. Read again

5. Results of the Study Result
The Effect of Varying Levels of Outdoor-Air Supply on the Symptoms of Sick Building Syndrome
Results of the Study
Result
Logistic Regression was used to??? many times … part of MeTHODS, not result
No Association OF WHAT? with carbon dioxide, humidity, temperature or air velocity
But association of WHAT? with environmental ratings was found. Details? Not much info as written

6. The Effect of Varying Levels of Outdoor-Air Supply on the Symptoms of Sick Building Syndrome
Facts??? About the Study
Possible Interferences <- meaning of this word?
Some participants were aware of the ventilation conditions. SO?
The buildings maynot be sick were chosen randomly. Correct. And important criticism, but put more cogently
New bBuildings with new furnishings have increased concentrations of contaminants so increasing outdoor air supply maybe beneficial for THEM
Parameter to measure Indoor Air Quality was Carbon dioxide which is just 13% of total contaminants in the air inside a building
Some work spaces were not air tight and were receiving outdoor air

7. Thank you for your attention !
How do you know audience was paying attaention, and not just checking Facebook?
Questions - Answers
Could be crisper.. Did you try out your STORY on others ?