Table 1 Characteristics of the categorical variables used in the second stage of the two-stage LCA
Latent Class Analysis derived variable (domain-specific patient categories from each health domain) | Prevalence, % | Posterior probability, median (interquartile range) |
|---|---|---|
Activity | 0.97 | |
Very high degree of disability (on all features) | 27 | (0.85-0.99) |
Very high degree of disability, but no walking distance limitation | 24 | |
Very low degree of disability | 15 | |
Low degree of disability, but dressing problems | 11 | |
Moderate degree of disability, no walking distance limitations | 9 | |
Low degree of disability, but difficulties in household duties | 9 | |
Moderate degree of disability, high degree of walking limitations (speed and distance) | 5 | |
Contextual factors | 1.00 | |
Healthy males working full‐time or self‐employed | 33 | (0.98-1.00) |
Healthy females working full‐time or part‐time | 21 | |
Females with comorbidity, working full‐time or part-time | 16 | |
Males with comorbidity, working full‐time or self-employed | 16 | |
Healthy patients in their 30s, higher BMI, working full-time, student or unemployed | 6 | |
Healthy students (approx. 25 years of age), lower BMI, fewer with health insurance | 4 | |
Retired patients (or working part‐time) with comorbidity, fewer with health insurance | 4 | |
Pain | 0.97 | |
Recent LBP with high degree of back pain severity | 27 | (0.83-0.99) |
Recent LBP with high degree of back pain severity and moderate degree of leg pain severity | 22 | |
Recent LBP with low degree of back pain severity | 17 | |
Persistent LBP, high degree of back and leg pain severity | 11 | |
Recent LBP with moderate degree of back pain severity, moderate degree of leg pain severity | 10 | |
Persistent LBP, moderate degree of back pain severity and low degree of leg pain severity | 9 | |
Recent LBP, moderate degree of LBP severity, moderate-high degree of leg pain severity, non-dominating LBP | 5 | |
Participation | 0.88 | |
Very low work and SPL, low degree of physical workload | 38 | (0.66-0.94) |
Very low SPL, unsure if work aggravates/makes worse, whichever degree of physical workload | 17 | |
Very low SPL, work is too heavy, aggravates/makes worse, pain caused by or at work, high degree of physical workload | 14 | |
High degree of SPL, but low degree of work limitations whichever degree of physical workload | 10 | |
Moderate degree of SPL, work aggravated/makes pain worse, very low degree of physical workload | 8 | |
Low degree of SPL, pain caused by work, none with very low degree of physical workload | 8 | |
High degree of SPL, work is too heavy, aggravates/makes worse, pain caused by work, high degree of physical workload | 6 | |
Physical impairment | 0.98 | |
LBP on flexion and extension, no leg pain | 28 | (0.87-1.00) |
LBP on flexion, extension, and side glide, no leg pain, SI joint pain, TrP and painful buttock/leg muscles | 19 | |
LBP on flexion, extension and side glide, no leg pain, diagnosis: reducible disc | 16 | |
LBP on flexion, extension and side glide, no leg pain, diagnosis: partly reducible disc | 15 | |
LBP on active range of motion in all directions | 14 | |
Leg pain on flexion, extension and side glide, neurological signs, TrP and painful buttock/leg muscles | 8 | |
Psychology | 0.97 | |
Treatment believers with low degree of depressive mood | 21 | (0.88-1.00) |
Pain-related concerns, moderate degree of depressive mood | 17 | |
Uncomplicated psychological profile | 14 | |
Sleep well, low degree of depressive mood | 13 | |
Treatment believers with sleep issues and moderate degree of depressive mood | 13 | |
Sleep issues, low degree of pain-related concerns | 11 | |
The complicated psychological profile | 6 | |
Pain-related concerns, low degree of depressive mood | 5 |