Nsfs 383 -

Research question: Did computer science PhDs experience a larger shift to telework compared to chemistry PhDs? NSFS 383 variable used: covid_telework_freq, phd_field_cs, phd_field_chem.

Citation format for NSFS 383:

National Center for Science and Engineering Statistics (NCSES). 2021. National Survey of Doctorate Recipients (NSFS 383), 2019–2021 Restricted-Use File. Alexandria, VA: NSF. https://www.nsf.gov/statistics/srvydoctoratework/

"If a product has NSF/ANSI 61, it automatically meets NSF 383." nsfs 383

False. NSF 61 covers non-metallics, but Section 7 (plastics) and the older elastomer protocols are less comprehensive than the dedicated NSF 383. A material can pass NSF 61 but still fail NSF 383 if it contains certain additives.

"NSF 383 is only for large municipal products."

False. It applies to any non-metallic wetted part, from a 12-inch pipeline gasket down to the tiny O-ring inside a residential drinking water filter head. Research question : Did computer science PhDs experience

"All rubber is the same – EPDM is always safe."

False. While EPDM (ethylene propylene diene monomer) is generally safer than some other rubbers, its safety depends entirely on the cure system and additives. NSF 383 tests the final compounded product, not just the base polymer.

Here is a practical code snippet for users working with the public-use NSFS 383 file in R. Citation format for NSFS 383:

# Load NSFS 383 public-use data
library(haven)
nsfs383 <- read_dta("nsfs383_puf.dta")
Just because a product claims "NSF compliant" doesn't mean it's certified. To be sure:

Research question: What percentage of biomedical PhDs who completed a 4+ year postdoc secure a tenure-track position within 5 years?
NSFS 383 variable used: postdoc_duration, curr_employ_sector, tenure_status.