Table 1 Subject demographics
From: Effects of mattress support on sleeping position and low-back pain
Variable | Males (n=8) Mean ± SD (range) | Females (n=8) Mean ± SD (range) | Total (N=16) Mean ± SD (range) |
|---|---|---|---|
Age (yrs) | 42.4 ± 8.6 (33-55) | 48.9 ± 16.4 (22-65) | 45.6 ± 13.1 (22-65) |
Weight (kg) | 97.5 ± 17.0 (75-130) | 75.4 ± 12.3 (66-95) | 86.5 ± 18.3 (66-130) |
Height (m) | 1.87 ± 0.04 (1.80-1.95) | 1.69 ± 0.05 (1.59-1.76) | 1.78 ± 0.10 (1.59-1.95) |
Body Mass Index (kg/m2) | 27.9 ± 4.2 (23.2-36.8) | 26.6 ± 4.8 (21.3-34.5) | 27.3 ± 4.4 (21.3-36.8) |
LBP frequency (nights/week) | 5.4 ± 2.1 (1-7) | 4.9 ± 2.3 (2-7) | 5.1 ± 2.2 (1-7) |