. 2014 Oct 29;69(Suppl 2):S99–S116. doi: 10.1093/geronb/gbu100

Table 10.

Comparison of Symptom Frequency Response Categories Utilized by Four Forms of the Perceived Stress Scale

Original 4-item scale	HRS 2002	NPSM questionnaire	NPSM analyses
Never	Hardly ever (or never)	Rarely or none of the time	Rarely or none of the time
Almost never	Hardly ever (or never)	Rarely or none of the time	Rarely or none of the time
Sometimes	Some of the time	Some of the time	Some of the time
Fairly often	Often	Occasionally	Much or most of the time
Very often	Often	Most of the time	Much or most of the time

Notes. HRS = Health and Retirement Study; NPSM = NSHAP’s Perceived Stress Measure; NSHAP = National Social Life, Health, and Aging Project.