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Lessons learned from 20 years of CBE’s occupant surveys Cover

Lessons learned from 20 years of CBE’s occupant surveys

Open Access
|Feb 2021

Figures & Tables

Table 1

Occupant time in space and workspace type by building type.

OFFICEHEALTHCAREK-12 EDUCATIONHIGHER EDUCATIONLABORATORYMULTI-UNIT RESIDENTIALTOTAL (%)
Time in the building<1 year14,0521,302921208213817.9%
1–2 years16,0949211,002222213719.8%
3–5 years13,091488805217141815.8%
>5 years23,5711,0881,31514050628.1%
n.a.13,221663691,73855791018.4%
Time at one’s personal workspace<3 months8,55324144436139.4%
4–6 months7,97628611857689.4%
7–12 months12,54325600156185614.4%
>1 year44,9781622,6694824921252.1%
n.a.6,1214,417881,78636091014.6%
Time in the workspace per week<10 hours4,134412251237625.0%
11–30 hours10,52065531104981312.4%
>30 hours53,4503903,1362788381363.7%
n.a.10,0404,1331101,91611691118.9%
Type of workspacePrivate17,545715864422691020.3%
Shared4,620903223108935.8%
High partition23,56960517755725.5%
Low partition20,405816913456722.2%
Open desk8,312712861677329.5%
Other5,7484,2832,7981,42244191016.7%
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Figure 1

Example questions from the Center for the Built Environment’s CBE Occupant Survey.

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Figure 2

General structure and sequence of the CBE Occupant Survey.

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Figure 3

Satisfaction ratings by item.

Note: Votes for the 16 satisfaction items in the CBE Occupant Survey. N = 897 buildings and 84,366 respondents. Numbers colored red to the left of the bars count the percentage of dissatisfied votes (1–3); and numbers colored green to the right of the bars count the percentage of satisfied votes (5–7).

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Figure 4

Self-reported productivity ratings by item.

Note: Votes for the seven self-reported productivity (i.e. ‘enhance/interfere’) items in the CBE Occupant Survey. N = 897 buildings and 79,137 respondents in the CBE Occupant Survey. Numbers colored red to the left of the bars count the percentage of votes for interfere (1–3); and numbers colored green to the right of the bar count the percentage of votes for enhance (5–7).

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Figure 5

Correlation matrix of satisfaction and enhance or interfere items.

Note: The correlation matrix of the 16 satisfaction items and seven enhance or interfere items (labels with the ‘Enh’ suffix) are based on pairwise complete observations. Items are arranged by the angular order of eigenvectors and only moderate (0.5–0.8) and strong (> 0.8) correlations are shown for legibility.

Table 2

Principal component analysis (PCA) rotated factor loadings for satisfaction items.

AIRCLEANLINESSLAYOUTINTERACTIONLIGHTINGFURNITUREACOUSTICS
Temperature0.880.150.110.050.120.110.13
Air quality0.590.400.130.090.200.190.15
General cleanliness0.130.900.090.060.110.120.08
General maintenance0.160.860.080.090.120.120.08
Cleaning service0.080.850.090.010.090.110.10
Building overall0.350.560.250.220.230.200.19
Amount of space0.130.150.850.130.120.200.11
Visual privacy0.050.070.700.130.140.090.45
Personal workspace0.280.310.530.220.260.290.32
Ease of interaction0.100.140.240.900.150.150.16
Amount of light0.120.160.150.100.880.140.12
Visual comfort0.160.180.130.070.860.170.15
Adjust your furniture0.140.170.150.080.150.880.13
Furnishing comfort0.120.190.180.090.160.870.12
Sound privacy0.120.100.220.040.100.120.86
Noise level0.140.160.160.140.150.120.83

[i] Note: Rotated factor loadings for the 16 satisfaction items are from the PCA. Items are sorted by their contribution to each component. Loadings > 0.5 are grouped and highlighted for clarity.

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Figure 6

Dendrogram of the hierarchical cluster analysis.

Note: Dendrogram showing the results of the hierarchical cluster analysis. Colors show the cluster association based on seven clusters cut at a Euclidian distance of approximately 320 (dashed line). Similar thematic mapping of the clusters to what was reported in Table 2 is shown to the right of the dendrogram.

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Figure 7

Comparison of pre- and post-2020 CBE Occupant Survey benchmark scores.

Note: Box plot showing the comparison of benchmark scores of the CBE Occupant Survey database calculated before the current analysis (pre-2020) and based on the results from the current analysis (post-2020). N = 881 buildings. The line in the box shows the median; lower and upper bounds of the boxes correspond to the 25th and 75th percentiles; and whiskers show the 5th and 95th percentiles. Text columns to the right show which satisfaction items were included in each benchmark score schema.

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Figure A1

Benchmark scores of the CBE Occupant Survey database calculated by building type.

Note: Box plot showing the comparison of benchmark scores of the CBE Occupant Survey database calculated by building type. The line in the box shows the median; lower and upper bounds of the boxes correspond to the 25th and 75th percentiles; and whiskers show the 5th and 95th percentiles.

DOI: https://doi.org/10.5334/bc.76 | Journal eISSN: 2632-6655
Language: English
Submitted on: Sep 4, 2020
Accepted on: Jan 16, 2020
Published on: Feb 11, 2021
Published by: Ubiquity Press
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2021 Lindsay T. Graham, Thomas Parkinson, Stefano Schiavon, published by Ubiquity Press
This work is licensed under the Creative Commons Attribution 4.0 License.