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Table 4 Description of steps/day by demographic and clinical characteristics

From: Early postoperative physical activity and function: a descriptive case series study of 53 patients after lumbar spine surgery

   6 weeks 3 months 6 months p-value*
Characteristic n Mean (95% CI) Mean (95% CI) Mean (95% CI)
Age      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      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      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      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)  
  1. *p-value obtained from pooled generalized estimating equations and indicates a statistical difference in physical activity based on characteristic
  2. Abbreviations: BMI Body mass index; CI Confidence interval; PT Physical therapy