Minimal Insomnia Symptom Scale (MISS)
In plain English
Minimal Insomnia Symptom Scale (MISS) is a multi-item scale (3 items). What it claims to measure: Presence and severity of core insomnia symptoms as an ultra-brief screen: difficulty initiating sleep, difficulty maintaining sleep, and non-restorative or unrefreshing sleep, over a recent recall period. Licence for an employer or vendor: no formal licence (verified 2026-07-12).
The published evidence is weak for structural validity, criterion validity against a reference standard, internal consistency, convergent and discriminant validity and measurement invariance. No published evidence was located for criterion validity against organisational outcomes (absence, turnover, performance), test-retest reliability and responsiveness to change: the registry searched and found none in the sweep to date, so if you need those properties evidenced, this instrument does not yet carry them. 2 of the 5 graded properties rest on evidence from clinical, student or otherwise non-working samples; where the property is sensitive to population that evidence cannot carry a High grade, and the reason is stated on each cell below. 3 of the 5 graded properties rest on adult general-population samples rather than samples of working adults; the flag says so on each cell.
Grades summarise the published evidence for this instrument on its own terms; they are not comparable across instruments, and this page makes no recommendation. Whether an instrument fits your workforce is a judgement this registry informs but cannot make. Full evidence, with citations, below. This summary is generated from the record's data, not written by hand.
Identity
Version: 3-item MISS (original Swedish form; no substantively revised version identified)
Structure: 3
Original citation: Broman JE, Smedje H, Mallon L, Hetta J (2008), Upsala Journal of Medical Sciences 113(2):131-142, doi:10.3109/2000-1967-221
Steward / publisher: Developed by Jan-Erik Broman and colleagues (Uppsala University). No commercial steward or central distributor identified; the founding paper is open access under a Creative Commons licence via Upsala Journal of Medical Sciences.
Licence status (verified 2026-07-12): No commercial licence or central instrument steward identified. The MISS was developed by Jan-Erik Broman and colleagues and published in the Upsala Journal of Medical Sciences, which is an open-access journal published by the Upsala Medical Society under Creative Commons Attribution (CC-BY) terms and holds the DOAJ Seal; the founding article and the open-access validation papers (for example the BMC Geriatrics elderly-population study, distributed under CC-BY 2.0) contain and describe the three items. No dedicated distributor page, fee schedule or explicit instrument-level reuse-licence statement (as distinct from the article licence) was located on any developer or steward site. Practically the instrument travels with open-access CC-BY articles rather than a commercial licence, but because no instrument-specific licence statement was found, potential users should confirm reuse terms with the developers rather than assume a formal permissive grant covering the instrument itself.
Constructs claimed
Presence and severity of core insomnia symptoms as an ultra-brief screen: difficulty initiating sleep, difficulty maintaining sleep, and non-restorative or unrefreshing sleep, over a recent recall period. Intended as an epidemiological and ultra-short clinical screening measure rather than a severity-grading or outcome instrument.
Evidence
Structural validity Lowthinevidence form: canonical
general general-population sample; also adult and elderly samples and cardiac-arrest survivors (flag basis: general-population sample; Swedish samples; cardiac-arrest survivors)
Structural evidence is thin and comes from a small number of Swedish studies. The founding study reported satisfactory basic psychometric properties for the 3-item scale in a general-population sample aged 20 to 64 (Broman 2008). Rasch-model analyses in adult (n=1075) and elderly (n=548) Swedish samples found the data generally met Rasch requirements and the scale could separate distinct groups, with differential item functioning by age but not gender (Westergren 2015). A later polytomous Rasch evaluation in 269 cardiac-arrest survivors found acceptable model fit and targeting with no disordered thresholds and no differential item functioning by age, sex or arrest location (Hellstrom 2025). With only three items, factor-analytic dimensionality is essentially not separately evaluable, and evidence rests on Rasch fit rather than EFA/CFA; the literature is small.
Convergent and discriminant validity Very lowthinevidence form: canonical
general the instrument is fielded on general populations; the cited studies describe no further sample
Little formal convergent/discriminant validity evidence was located. The founding paper reported validity consistent with the scale distinguishing insomnia cases, and the instrument is presented as measuring the same insomnia-symptom construct as longer scales, but explicit correlations with established comparator sleep measures (for example the ISI or Pittsburgh Sleep Quality Index) with reported magnitudes were not identified in the retrieved validation studies (Broman 2008; Westergren 2015). Convergent and discriminant validity should therefore be regarded as largely untested with quantified magnitudes.
Criterion validity: reference standard Lowthinevidence form: canonical
general general-population sample; also elderly sample, adult and elderly samples and cardiac-arrest survivors (flag basis: general-population sample; elderly Swedish sample; cardiac-arrest survivors)
This is the MISS's best-evidenced property, though still modest in volume. In the founding study, ROC analysis showed the MISS could distinguish subjects with clinical insomnia defined by ICD-10 research criteria in a general-population sample (Broman 2008). In an elderly Swedish sample (n=548), against self-reported insomnia criteria, an optimal cut-off of >=7 gave sensitivity 0.93 and specificity 0.84 (positive/negative predictive values 0.256/0.995), with reliability 0.81 (Hellstrom 2010). A combined analysis of adult and elderly samples suggested different cut-offs by age group (>=6 for adults, >=7 for the elderly), while noting the optimal clinical cut-score is not settled (Westergren 2015). Among cardiac-arrest survivors an optimal cut-off of >=6 was suggested (Hellstrom 2025). Reference standards are self-report or ICD-10 research criteria rather than full clinical interview, and cut-offs are unsettled.
Criterion validity: organisational Absent (searched; none found in the sweep to date)untestedevidence form: canonical
absence type: population-general searched; none found in the sweep to date
No evidence was located validating the MISS against any organisational or work outcome (sickness absence, turnover, performance, or diagnosed conditions in a work context). The retrieved literature is confined to general-population, elderly and clinical-survivor screening. The absence is total and is the finding: the MISS has no demonstrated relationship to work-relevant endpoints.
Internal consistency Lowthinevidence form: canonical
indirect elderly sample and cardiac-arrest survivors; no working-adult or general-population sample (flag basis: elderly Swedish sample; cardiac-arrest survivors)
Reliability estimates are acceptable but few. The founding study reported satisfactory reliability (Broman 2008). Reliability was 0.81 in the elderly Swedish sample, with corrected item-total correlations of 0.64 to 0.70 (Hellstrom 2010). Rasch-based reliability was reported as acceptable in cardiac-arrest survivors (Hellstrom 2025). Estimates cluster around the low-0.8 range, adequate for a 3-item screen but drawn from a handful of Swedish studies.
Test-retest reliability Absent (searched; none found in the sweep to date)untestedevidence form: canonical
absence type: population-general searched; none found in the sweep to date
No test-retest (repeated-administration) reliability coefficient for the MISS was located in the latest review pass. The reliability figures reported in the literature (for example 0.81 in the elderly sample) are internal-consistency estimates, not stability over time, and must not be read as test-retest. The absence of any test-retest evidence is itself the finding and is a material gap, particularly for any use of the MISS as a repeated or monitoring measure.
Measurement invariance Very lowthinevidence form: canonical
indirect adult and elderly samples and cardiac-arrest survivors; no working-adult or general-population sample (flag basis: adult and elderly Swedish samples; cardiac-arrest survivors)
Invariance evidence is limited to differential item functioning (DIF) analyses within the Rasch studies. DIF was found by age but not gender across adult and elderly Swedish samples, with the practical recommendation that a >=6 cut-off allows reasonable comparison between adults and the elderly while raw-score comparisons across age should be made cautiously (Westergren 2015). In cardiac-arrest survivors no DIF was found for age, sex or place of arrest (Hellstrom 2025). No formal multi-group configural/metric/scalar CFA invariance testing, no cross-language invariance, and no occupational invariance evidence was located.
Sub-grades (evidence differs by subgroup):
- {"subgroup": "across age", "grade": "Low", "note": "DIF by age reported (Westergren 2015); caution comparing raw scores across age"}
- {"subgroup": "across sex", "grade": "Low", "note": "no DIF by gender in the Swedish and cardiac-arrest analyses"}
- {"subgroup": "across occupation", "grade": "Absent", "note": "no occupational-group evidence located"}
Responsiveness and MIC Absent (searched; none found in the sweep to date)untestedevidence form: canonical
absence type: population-general searched; none found in the sweep to date
No responsiveness or minimal important change evidence was located. The MISS was developed and validated as an epidemiological and screening instrument, not as a change/outcome measure, and no study establishing sensitivity to change or a minimal important difference was retrieved (Broman 2008; Westergren 2015). This is a genuine gap: the MISS should not be assumed responsive to intervention.
Populations, languages and norms
The MISS was developed in Sweden and its normative and validation data are essentially Swedish: a general-population sample aged 20 to 64 (n=1075) providing initial norms and showing women scoring higher than men with no age relationship (Broman 2008); an elderly sample aged 65+ (n=548) (Hellstrom 2010; Westergren 2015); a Swedish adolescent study (Hedin 2022); and a Swedish cardiac-arrest-survivor sample (Hellstrom 2025). Population and language coverage beyond Swedish is minimal, and no general-population norms outside Sweden and no working-adult norms were located. Norms are Swedish-specific.
Criticisms and controversies
The dominant issue is thinness: the MISS has a small validation literature concentrated in Swedish samples from one research group, which limits confidence and generalisability, and leaves several core measurement properties (test-retest reliability, responsiveness/MIC, quantified convergent/discriminant validity) effectively unevidenced. The optimal case-finding cut-off is unsettled, varying between >=6 and >=7 across age groups and samples, and the developers themselves called for further work to determine a clinically optimal cut-score (Westergren 2015; Hellstrom 2010). Differential item functioning by age means raw-score comparisons across age groups are not straightforward (Westergren 2015). With only three items the instrument buys brevity at the cost of content coverage and precision, and it is explicitly a screen, not a severity or outcome measure. No verifiable central licence statement for the instrument was located, so reuse terms are not clearly documented.
References (5)
- Broman JE; Smedje H; Mallon L; Hetta J (2008). The Minimal Insomnia Symptom Scale (MISS): a brief measure of sleeping difficulties https://doi.org/10.3109/2000-1967-221
- Hellström A; Hagell P; Fagerström C; Willman A (2010). Measurement properties of the Minimal Insomnia Symptom Scale (MISS) in an elderly population in Sweden https://doi.org/10.1186/1471-2318-10-84
- Westergren A; Broman JE; Hellström A; Fagerström C (2015). Measurement properties of the Minimal Insomnia Symptom Scale as an insomnia screening tool for adults and the elderly https://doi.org/10.1016/j.sleep.2014.10.016
- Hedin G; Garmy P; Norell-Clarke A; et al. (2022). Measurement properties of the minimal insomnia symptom scale (MISS) in adolescents https://doi.org/10.1186/s41606-022-00075-9
- Hellström P; Israelsson J; Blennow Nordström E; Hjelm C (2025). Measurement properties of the Minimal Insomnia Symptom Scale (MISS) among cardiac arrest survivors: a Rasch evaluation study https://doi.org/10.1016/j.resplu.2025.100876
Record notes
Overall confidence: LOW and appropriately so. The MISS is a genuinely thin instrument, its evidence base is a handful of Swedish studies (general population, elderly, adolescents, cardiac-arrest survivors) largely from the originating group. Its best-evidenced property is criterion-standard screening accuracy against self-report/ICD-10 research criteria (good sensitivity/specificity at cut-offs of 6 to 7), but even this is modest in volume and the cut-off is unsettled. Test-retest reliability, responsiveness/MIC and quantified convergent/discriminant validity are Absent/untested; organisational criterion validity is Absent. Internal-consistency and Rasch-reliability figures (around 0.81) must not be mistaken for stability over time. Every graded cell is population-indirect for a working-adult audience (general-population, older-adult and clinical samples only) and the workplace deployment context is untested. No verifiable current licence statement for the instrument was found in the latest review pass, so reuse terms are recorded as not positively verified rather than assumed permissive. The thinness is itself the graded finding.