Physical and Mental Impairment-of-Function Evaluation (PAMIE)

Abstract

The Physical and Mental Impairment-of-Function Evaluation (PAMIE) is a comprehensive psychometric instrument designed to assess the functional status and behavioral characteristics of aged patients, particularly those residing in institutional or long-term care settings. Developed by Gurel, Linn, and Linn in 1972, the scale provides an objective measure of both physical limitations, such as Activities of Daily Living (ADLs) and ambulation, and various psychological and behavioral impairments, including paranoia, confusion, and depression. The PAMIE scale is structured around ten distinct factors derived from extensive factor analysis, making it a valuable tool for patient classification, care planning, and research in gerontology.

Keywords

PAMIE scale, Geriatric assessment, Functional impairment, Activities of Daily Living, Mental confusion, Behavioral assessment, Long-term care, Gerontology.

Authors

Gurel, L., Linn, M.W., Linn, B.S.

Purpose

The primary purpose of the PAMIE scale is to quantify the degree of physical and mental impairment observed in elderly and geriatric patients. By utilizing ratings based on staff observation, the instrument facilitates the systematic documentation of patient functioning across a wide spectrum of domains, ranging from basic self-care tasks to complex interpersonal behaviors and cognitive status.

This systematic quantification is essential for several clinical and administrative goals, including determining appropriate levels of care, monitoring patient deterioration or improvement over time, and classifying patients for research studies focusing on chronic illness and aging. The scale serves as a comprehensive tool for assessing the dependency level of the patient population in institutional settings.

Construct

The PAMIE scale measures the overarching construct of Physical and Mental Impairment-of-Function in the aged. This construct is recognized as multidimensional, encompassing ten distinct sub-constructs identified through rigorous factor analysis.

These sub-constructs cover critical aspects of geriatric health, including physical mobility (Ambulation, Sensory and Motor Function), independence in daily tasks (Self-care), and various psychological distress and maladaptive behaviors (Belligerence, Paranoia, Anxiety, and Mental Confusion). The scale aims to capture the total burden of impairment, reflecting both chronic physical limitations and psychiatric symptoms common in institutionalized elderly individuals.

Validity

While specific detailed validity coefficients (such as criterion or discriminant validity) are not explicitly provided in the core source material, the establishment of ten distinct factors through factor analysis suggests strong evidence for construct validity. The original development process detailed by Gurel et al. (1972) relied on empirical data derived from a large sample of aged patients to ensure that the scale items logically group into meaningful clinical domains.

Furthermore, the scale exhibits high face validity and content validity, as the items directly address observable physical deficits (e.g., ambulation ability, paralysis) and common geriatric psychological symptoms (e.g., confusion, suspicion), making it highly relevant to clinical practice in long-term care settings, particularly in the field of gerontology.

Reliability

Specific internal consistency measures (like Cronbach’s Alpha) or test-retest reliability statistics are not detailed in the provided excerpt. However, given that the PAMIE scale is designed for observation by professional staff in structured environments, high inter-rater reliability is crucial for its utility.

The clear, behaviorally anchored nature of many items (e.g., “Gives sarcastic answers,” “Is toileted in bed by catheter”) is intended to minimize subjective interpretation, thereby enhancing the consistency of ratings across different observers or staff members. The reliance on observable behaviors, rather than self-report, strengthens its reliability in populations with cognitive decline.

Factor Analysis

The structure of the PAMIE scale is based on a comprehensive factor analysis that resulted in the identification of ten distinct, empirically derived factors. These factors represent the primary dimensions of physical and mental impairment captured by the 77 items. The factors and their corresponding domains are:

• I. Self-care: Focuses on independence in fundamental Activities of Daily Living (ADLs), including hygiene, dressing, and continence.
• II. Belligerence, Irritability: Measures hostile, uncooperative, or aggressive behavior toward staff or other patients.
• III. Mental Confusion: Assesses disorientation, memory problems, wandering thoughts, and difficulty communicating coherently.
• IV. Anxiety, Depression: Reflects mood disturbances, including sadness, restlessness, crying, and being easily upset.
• V. Bedfast, Moribund: Captures physical confinement, reliance on medical interventions (e.g., tube feeding, catheterization), and overall physical decline.
• VI. Behavioral Deterioration: Involves items covering poor grooming, messiness in eating, and socially inappropriate behaviors.
• VII. Paranoia, Suspicion: Relates to distrust, blaming others, complaints of mistreatment, and suspicious ideation.
• VIII. Sensory and Motor Function: Measures specific physical deficits, including paralysis, hearing and sight impairment, and history of Cerebrovascular Accident (CVA).
• IX. Withdrawn, Apathetic: Describes social isolation, lack of interest in surroundings, and general passivity.
• X. Ambulation: Directly measures the patient’s mobility level, from independent walking to complete reliance on a wheelchair or being bedridden.

Instrument

Test Type: Observer Rating Scale / Behavioral Checklist

Format: 77 items, utilizing a mix of multi-point scales (for functional limitations) and dichotomous (Yes/No) checklist items (for specific behaviors).

Language Available: English (Original)

Population Group: Aged/Geriatric patients in institutional settings.

Age Group: Elderly adults (typically 65+).

Population Details: Primarily developed and validated on patients residing in long-term care facilities, such as nursing homes or chronic care hospitals, often involving severe physical, psychiatric, or neurocognitive impairment.

Test Methodology: Clinical observation and staff report. The scale is completed by nursing staff or other direct care providers who have had sufficient opportunity to observe the patient’s behavior and functional status over a defined period.

Keywords

PAMIE, Geriatric assessment, Functional status, Belligerence, Mental confusion, Self-care, Ambulation, Behavioral checklist, 1972 scale, Institutionalized elderly.

Authors

Author ORCID Identifier: Not explicitly detailed in source materials.

Affiliation Email addresses: Not explicitly detailed in source materials.

Correspondence Address: Not explicitly detailed in source materials.

Permissions & Fee and Test Year

Test Year: 1972 (First published).

Permissions & Fee: The scale is published in academic literature and is widely used for research and clinical purposes in gerontology. No explicit licensing fee is typically associated with the use of this instrument in standard clinical or academic settings.

The original PDF of the instrument and related discussion can be downloaded here: www.a4ebm.org/sites/default/files/Measuring%20Health.pdf

Reference’s

Gurel, L., Linn, M.W., Linn, B.S. (1972). Physical and Mental Impairment-of-Function Evaluation in the aged: the PAMIE scale. Journal of Gerontology, 27:83–90.

Goga, J.A., Hambacher, W.O. (1977). Psychologic and behavioral assessment of geriatric patients: a review. J Am Geriatr Soc, 25:232–237.

McDowell, Ian. (2006). Measuring Health: A Guide to Rating Scales and Questionnaires, Third Edition. OXFORD UNIVERSITY PRESS.

Items of the Physical and Mental Impairment-of-Function Evaluation (PAMIE)

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

1. Which of the following best fits the patient? (Circle one)

• 5 Has no problem in walking
• 4 Slight difficulty in walking, but manages; may use cane
• 3 Great difficulty in walking, but manages; may use crutches or stroller
• 2 Uses wheelchair to get around by himself
• 1 Uses wheelchair pushed by others
• 0 Doesn’t get around much; mostly or completely bedfast, or restricted to chair

(Factor X)

2. As far as you know, has the patient had one or more strokes (CVA)? (Circle one)

• 0 No stroke
• 1 Mild stroke(s)
• 2 Serious stroke(s)

(Factor VIII)

3. Which of the following best fits the patient? (Circle one)

• 4 In bed all or almost all day
• 3 More of the waking day in bed than out of bed
• 2 About half the waking day in bed, about half out of bed
• 1 More of the waking day out of bed than in bed
• 0 Out of bed all or almost all day

(Factor V)

Yes No (Check either Yes or No)

1. Eats a regular diet
2. Is given bed baths
3. Gives sarcastic answers
4. Takes a bath/shower without help or supervision
5. Leaves his clothes unbuttoned
6. Is messy in eating
7. Is irritable and grouchy
8. Keeps to himself
9. Says he’s not getting good care and treatment
10. Resists when asked to do things
11. Seems unhappy
12. Doesn’t make much sense when he talks to you
13. Acts as though he has a chip on his shoulder
14. Is IV or tube fed once a week or more
15. Has one or both hands/arms missing or paralyzed
16. Is cooperative
17. Is toileted in bed by catheter and/or enema
18. Is deaf or practically deaf, even with hearing aid
19. Ignores what goes on around him
20. Knows who he is and where he is
21. Gives the staff a “hard time”
22. Blames other people for his difficulties
23. Says, without good reason, that he’s being mistreated or getting a raw deal
24. Gripes and complains a lot
25. Says other people dislike him, or even hate him
26. Says he has special or superior abilities
27. Has hit someone or been in a fight in the last six months
28. Eats without being closely supervised or encouraged
29. Says he’s blue and depressed
30. Isn’t interested in much of anything
31. Has taken his clothes off at the wrong time or place during the last six months
32. Makes sexually suggestive remarks or gestures
33. Objects or gives you an argument before doing what he’s told
34. Is distrustful and suspicious
35. Looks especially neat and clean
36. Seems unusually restless
37. Says he’s going to hit people
38. Receives almost constant safety supervision (for careless smoking, objects in mouth, self-injury, pulling catheter, etc.)
39. Looks sloppy
40. Keeps wandering off the subject when you talk with him
41. Is noisy; talks very loudly
42. Does things like brush teeth, comb hair, and clean nails without help or urging
43. Has shown up drunk or brought a bottle on the ward
44. Cries for no obvious reason
45. Says he would like to leave the hospital
46. Wets or soils once a week or more
47. Has trouble remembering things
48. Has one or both feet/legs missing or paralyzed
49. Walks flight of steps without help
50. When needed, takes medication by mouth
51. Is easily upset when little things go wrong
52. Uses the toilet without help or supervision
53. Conforms to hospital routine and treatment program
54. Has much difficulty in speaking
55. Sometimes talks out loud to himself
56. Chats with other patients
57. Is shaved by someone else
58. Seems to resent it when asked to do things
59. Dresses without any help or supervision
60. Is often demanding
61. When left alone, sits and does nothing
62. Says others are jealous of him
63. Is confused
64. Is blind or practically blind, even with glasses
65. Decides things for himself, like what to wear, items from canteen (or canteen cart), etc.
66. Swears; uses vulgar or obscene words
67. When you try to get his attention, acts as though lost in a dream world
68. Looks worried and sad
69. Most people would think him a mental patient
70. Shaves without any help or supervision, other than being given supplies
71. Yells at people when he’s angry or upset
72. Is dressed or has his clothes changed by someone
73. Gets own tray and takes it to eating place
74. Is watched closely so he doesn’t wander

Factor Groupings:

• I. Self-care (items 7, 31, 45, 49, 55, 60, 62, 68, 73 and 75)
• II. Belligerence, irritability (items 6, 10, 13, 16, 19, 24, 27, 36, 40, 61, 63, 69 and 74)
• III. Mental confusion (items 15, 34, 41, 43, 50, 58, 66, 70, 72 and 77)
• IV. Anxiety, depression (items 14, 22, 32, 39, 47, 54 and 71)
• V. Bedfast, moribund (items 3, 5, 17, 20, 23, 53 and 56)
• VI. Behavioral deterioration (items 8, 9, 38, 42 and 44)
• VII. Paranoia, suspicion (items 12, 25, 26, 28, 37 and 65)
• VIII. Sensory and motor function (items 2, 18, 51 and 57)
• IX. Withdrawn, apathetic (items 11, 22, 33, 59 and 64)
• X. Ambulation (items 1, 52 and 76)