Table 1 Baseline characteristics of the study group
From: Obese people benefit from lumbar spinal stenosis surgery as much as people of normal weight
|
Normal weight < 25 N = 106 |
Overweight 25.0–29.9 N = 154 |
Obese ≥30 N = 99 | P value | |
|---|---|---|---|---|
| BMI, mean (SD) | 22.7 (1.9) | 27.5 (1.4) | 33.8 (3.2) | .. |
| Female, n (%) | 63 (59) | 78 (51) | 55 (56) | 0.37 |
| Age, mean (SD) | 70 (12) | 70 (10) | 67 (13) | 0.063 |
| Diagnosis, n (%) | 0.31 | |||
| Central spinal stenosis without olisthesis (≤ 3 mm) | 58 (55) | 95 (62) | 63 (64) | |
| Central spinal stenosis with olisthesis (> 3 mm) | 36 (34) | 38 (25) | 21 (21) | |
| Lateral stenosis | 12 (11) | 21 (14) | 15 (15) | |
| Duration of back pain, n (%) | 0.86 | |||
| No pain | 5 (5) | 5 (3) | 2 (2) | |
| Less than 3 months | 7 (7) | 10 (7) | 4 (4) | |
| 3–12 months | 27 (26) | 35 (24) | 28 (29) | |
| 1–2 years | 17 (16) | 22 (15) | 17 (17) | |
| Over 2 years | 49 (47) | 72 (50) | 47 (48) | |
| Duration of leg pain, n (%) | 0.71 | |||
| No pain | 3 (3) | 4 (3) | 3 (3) | |
| Less than 3 months | 9 (8) | 10 (7) | 7 (7) | |
| 3–12 months | 32 (30) | 47 (31) | 28 (29) | |
| 1–2 years | 26 (25) | 32 (21) | 19 (19) | |
| Over 2 years | 36 (34) | 59 (39) | 41 (42) | |
| Smoker, n (%) | 12 (11) | 19 (13) | 8 (8) | 0.56 |
| VAS, mean (SD) | ||||
| Back | 52 (28) | 55 (26) | 57 (28) | 0.49 |
| Leg | 56 (26) | 61 (25) | 60 (25) | 0.28 |
| Regular pain medication, n (%) | 56 (53) | 80 (52) | 55 (56) | 0.85 |
| Walking distance < 0.5 km | 62 (58) | 96 (62) | 82 (83) | 0.007 |