Questions about a number?
Ask on a demo call, or email us. We’ll show you the source and how we use it.
Sources
Every number, and where it comes from.
Each figure on this site links here. Every entry gives the full citation, the exact wording from the source, and a link so you can check it yourself.
- Published research and government data only
- Copied from the source and checked against it
- The date each one was last checked
Research and data sources
1 in 38 hospital patients has at least one healthcare-associated infection on any given day.
HAIs: Reports and Data. Centers for Disease Control and Prevention (CDC), 2026; HAI Hospital Prevalence Survey, 2023 data; page dated July 15, 2026.
From the source“On any given day in 2023, about 1 in 38 hospital patients had at least one healthcare-associated infection.”
Open the source Checked October 19, 2026Used on: Home, Proof, Shared equipment goes from patient to patient without a clean
48% of high-touch surfaces were cleaned at discharge across 36 hospitals. With feedback to EVS staff, it rose to 77%.
Carling PC, Parry MM, Rupp ME, Po JL, Dick B, Von Beheren S, et al. Improving cleaning of the environment surrounding patients in 36 acute care hospitals. Infection Control & Hospital Epidemiology, 2008; 29(11):1035–41.
From the source“Of 20,646 standardized environmental surfaces (14 types of objects), only 9,910 (48%) were cleaned at baseline.”
Used on: Home, Proof, Rooms get used before anyone checks them, Cleaning depends on who’s working that shift
2.45× the odds of picking up an organism when the room’s previous patient carried it.
Mitchell BG, McDonagh J, Dancer SJ, Ford S, Sim J, Thottiyil Sultanmuhammed Abdul Khadar B, et al. Risk of organism acquisition from prior room occupants: an updated systematic review. Infection, Disease & Health, 2023; 28(4):290–297.
From the source“The pooled acquisition odds ratio (OR) for all the organisms across all studies was 2.45 …”
“Picking up” means colonization or infection. 95% confidence interval 1.53–3.93.
Used on: Home, Proof, EVS doesn’t always know a room needs an isolation clean
$48,108 in added hospital cost for one central-line bloodstream infection. A C. diff case adds $17,260.
Estimating the Additional Hospital Inpatient Cost and Mortality Associated With Selected Hospital-Acquired Conditions: Results. Agency for Healthcare Research and Quality (AHRQ), 2017; AHRQ Publication No. 18-0011-EF.
From the source“We estimated the additional cost for hospital-acquired CLABSI to be $48,108 (95% CI: $27,232 to $68,983).”
Hospital costs per case, in 2015 dollars. The C. diff figure is from the same report’s results table.
Open the source Checked October 19, 2026Used on: Home, Proof, EVS doesn’t always know a room needs an isolation clean, When someone asks if a room was cleaned, we can’t prove it
4.5% of patients boarded 12 hours or more in the ED died, against 2.5% of those boarded under 2 hours.
Singer AJ, Thode HC Jr, Viccellio P, Pines JM The association between length of emergency department boarding and mortality. Academic Emergency Medicine, 2011; 18(12):1324–9.
From the source“Mortality generally increased with increasing boarding time, from 2.5% in patients boarded less than 2 hours to 4.5% in patients boarding 12 hours or more (p < 0.001).”
One academic emergency department, 41,256 admissions.
Used on: Proof, Rooms sit dirty while admissions wait
$9,693–$13,298 a day in added revenue from cutting ED boarding by one hour, in one hospital’s model.
Pines JM, Batt RJ, Hilton JA, Terwiesch C The financial consequences of lost demand and reducing boarding in hospital emergency departments. Annals of Emergency Medicine, 2011; 58(4):331–40.
From the source“A 1-hour reduction in ED boarding time would result in $9,693 to $13,298 of additional daily revenue from capturing left without being seen and diverted ambulance patients.”
A simulation based on one hospital.
Used on: Proof, Rooms sit dirty while admissions wait
86 min of a 10-hour med-surg nursing shift go to coordinating with other team members and departments.
Hendrich A, Chow MP, Skierczynski BA, Lu Z A 36-hospital time and motion study: how do medical-surgical nurses spend their time?. The Permanente Journal, 2008; 12(3):25–34.
From the source“Three subcategories accounted for most of nursing practice time: documentation (35.3%; 147.5 minutes), medication administration (17.2%; 72 minutes), and care coordination (20.6%; 86 minutes).”
36 hospitals, 767 nurses. Times are normalized to a 10-hour shift.
Used on: Proof, We keep calling EVS to ask if the room is ready
49.8% of U.S. maids and housekeeping cleaners are Hispanic or Latino, as are 35.6% of janitors and building cleaners.
Employed people by detailed occupation, sex, race, and Hispanic or Latino ethnicity (Table 11). U.S. Bureau of Labor Statistics, Current Population Survey, 2025; 2025 annual averages.
From the source“Table rows: “Janitors and building cleaners 2,341 36.2 74.6 18.0 2.9 35.6” and “Maids and housekeeping cleaners 1,392 86.4 74.7 15.0 5.4 49.8”. The last column is percent Hispanic or Latino.”
BLS: annual estimates for 2025 are 11-month averages that exclude October.
Open the source Checked October 19, 2026
Control’s own numbers
Numbers that describe the product.
These describe how Control works today. You can see each one on a demo.
- 10 minutes
- The time an assigned EVS employee has to accept a room before it moves to the next person.
- 24 hours
- The cycle for daily cleans of occupied rooms.
- 3 languages
- English, Spanish and French, chosen by each person.
Example screens
Room numbers, times and figures on the illustrated screens and example timelines are examples. They show how Control looks and works. They are not results from a hospital.
Pilot results
Measured results from our Iowa pilots will be listed here with the unit, the time period and how they were measured, once each pilot reports them.