Table 4 Description of steps/day by demographic and clinical characteristics
|  |  | 6 weeks | 3 months | 6 months | p-value* |
|---|---|---|---|---|---|
Characteristic | n | Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | |
Age | Â | Â | Â | Â | 0.81 |
  < 60 years | 25 | 3444 (2767; 4121) | 3732 (3225; 4239) | 3766 (3086; 4444) |  |
  ≥ 60 years | 28 | 3191 (2383; 3998) | 3681 (3044; 4319) | 3794 (3088; 4500) |  |
Sex | Â | Â | Â | Â | 0.35 |
 Male | 19 | 3986 (3105; 4867) | 4170 (3391; 4948) | 4050 (3233; 4867) |  |
 Female | 34 | 2933 (2296; 3569) | 3446 (2994; 3897) | 3630 (3020; 4241) |  |
BMI |  |  |  |  | <  0.05 |
  < 24.9 kg/m2 | 10 | 5470 (4215; 6724) | 4652 (3668; 5636) | 5472 (4463; 6480) |  |
 25–29.9 kg/m2 | 16 | 3220 (2405; 3935) | 3726 (3030; 4421) | 3357 (2554; 4260) |  |
  ≥ 30 kg/m2 | 27 | 2564 (1950; 3178) | 3343 (2805; 3881) | 3405 (2839; 3972) |  |
Previous spine surgery |  |  |  |  | <  0.05 |
 No | 35 | 3374 (2651; 4097) | 3801 (3327; 4275) | 4178 (3579; 4777) |  |
 Yes | 18 | 3186 (2486; 3887) | 3519 (2733; 4306) | 3008 (2267; 3750) |  |
Surgery type | Â | Â | Â | Â | 0.38 |
 No fusion | 17 | 3667 (2695; 4640) | 3899 (3173; 4625) | 3716 (3089; 4343) |  |
 Fusion | 36 | 3141 (2511; 3772) | 3614 (3114; 4114) | 3811 (3150; 4472) |  |
PT visits | Â | Â | Â | Â | 0.20 |
  > 10 visits | 21 | 3724 (2809; 4639) | 3893 (3250; 4536) | 3701 (2993; 4410) |  |
  < 10 visits | 32 | 3039 (2385; 3693) | 3583 (3044; 4121) | 3833 (3158; 4508) |  |