ArticlePeerJ2021
Construct validity and internal consistency of the Breast Inflammatory Symptom Severity Index in lactating mothers with inflammatory breast conditions.
Article in PeerJ, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06667609 (Validity and Reliability of the Mastitis Symptom Severity Assessment Methods), which is not on this map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Validity and Reliability of the Mastitis Symptom Severity Assessment Methods (M-Score and BISSI) in Non-Lactational Mastitis
Who cites it
3 citing papers in PubMed, 8 citations in OpenAlex.
- Validity of an ion selective electrode for measuring human milk sodium and potassium ion levels at point-of-care in lactating mothers with inflammatory breast conditions.International breastfeeding journal · 2025Article
- Physical therapy intervention for breast symptoms in lactating women: a randomized controlled trial.BMC pregnancy and childbirth · 2023Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundInflammatory Conditions of the Lactating Breast (ICLB) affect more than one in five lactating mothers, yet no fully validated outcome measures exist to aid clinicians in their patient-centred care of women with ICLB. The Breast Inflammatory Symptom Severity Index (BISSI) is an ICLB-specific clinician administered patient-reported outcome measure, currently used by Australian clinicians, who treat mothers with ICLB. To date the BISSI has undergone partial psychometric development. This study, therefore, aimed to undertake the next stage of psychometric development by determining the construct validity and internal consistency of the BISSI.
methodsA retrospective audit was conducted on patient records of 160 mothers who were treated for ICLB, at a private physiotherapy practice in Melbourne, Australia. An electronic data capture tool was used to collate BISSI scores and associated ICLB assessment variables. Construct validity was determined through factor analysis and discriminant performance. Reliability was determined by assessing measures of internal consistency.
resultsFactor analysis established that BISSI items (
conclusionsThe BISSI has adequate construct validity, demonstrating behaviour consistent with theoretical constructs of inflammation severity, via its dimensionality and ability to discriminate symptom severity. The BISSI also has adequate internal consistency demonstrating reliability. Therefore, clinicians can have confidence that the BISSI is valid, the individual item scores are correlated, and the concepts are consistently measured.
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Registered trials
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