Skip to main content

Table 3 Comparison of patients with an outcome in the registry to patients lacking an outcome

From: A cohort study of 4,190 patients treated with low-intensity pulsed ultrasound (LIPUS): findings in the elderly versus all patients

  Outcome (± SD) N or % No outcome (± SD) N or % Significance
Patient age (years) 43.3 (±18.1) 4,157 41.4 (±17.9) 1,539 0.0004
Weight (lb) 170.5 (±43.0) 3,296 176.5 (±55.8) 1,030 0.002
Height (in) 67.9 (±4.7) 3,309 68.4 (±4.4) 1,031 0.0004
Body-mass index 25.9 (±5.5) 3,278 26.4 (±7.8) 1,021 NS
Days-to-treatment (mean) 38.6 (±24.5) 4,170 39.6 (±25.3) 1,567 NS
Days-on-treatment (mean) 118.5 (±86.0) 4,190 116.4 (±107.0) 1,561 NS
Female (vs. male) (%)** 1,745 (vs. 2,441) 41.7% 599 (vs. 957) 38.5% NS
Open (vs. closed fracture) (%)** 710 (vs. 3,320) 17.6% 243 (vs. 1,245) 16.3% NS
Number of prior procedures (mean) 1.5 (±0.8) 991 1.4 (±0.7) 368 NS
Number of comorbidities (mean) 1.4 (±0.7) 763 1.5 (±0.9) 250 NS
Number of medications (mean) 0.4 (±0.7) 2,747 0.4 (±0.6) 755 NS
Smoking years (mean) 5.1 (±10.6) 3,183 6.6 (±11.3) 1,041 0.0002
  1. This approach should be very sensitive to risk factors that increase the risk of loss to follow-up. The p values shown are from T-tests, except for comparisons with an asterisk (**), which were tested using Fischer’s exact test because they are dichotomous variables.