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Table 5 Results of Log-rank test of latency distribution in variables

From: Clinical characteristics of post-traumatic epilepsy and the factors affecting the latency of PTE

Variables No. (%) Latency (IQR) (mo) χ2 P-Value
Gender 6.998 0.080*
 Males 2246 (78.48) 23.0 (5.0–72.0)   
 Females 616 (21.52) 36.0 (6.0–96.0)   
Age at TBI (years) 140.533 0.000**
  < 18 1242 (43.40) 48.0 (6.0–108.0)   
  ≥ 18 1620 (56.60) 12.0 (4.0–48.0)   
Family history of epilepsy 0.898 0.343
 No 2852 (99.65) 24.0 (5.0–84.0)   
 Yes 10 (0.35) 24.0 (22.0–108.0)   
The severity of TBI 11.743 0.003**
 Mild 203 (7.09) 48.0 (6.0–84.0)   
 Moderate 1180 (41.23) 24.0 (5.0–90.0)   
 Severe 1479 (51.68) 17.0 (5.0–72.0)   
Craniocerebral injury 7.955 0.005**
 Single 1427 (49.86) 24.0 (6.0–84.0)   
 Multiple 1435 (50.14) 19.0 (4.0–72.0)   
Post-TBI treatment 75.998 0.000**
 Conservative treatment 1862 (65.06) 24.0 (6.0–96.0)   
 PD/DC 607 (21.21) 18.0 (4.0–72.0)   
 PD/DC + CP 393 (13.73) 10.0 (4.0–33.0)   
Acute seizure 315.064 0.000**
 Without 2691 (94.03) 24.0 (6.0–84.0)   
 With 171 (5.97) 1.0 (1.0–3.0)   
Residual disability 36.876 0.000**
 Without 2547 (88.99) 24.0 (6.0–84.0)   
 With 315 (11.01) 8.0 (3.0–36.0)   
EEG findings a 0.935 0.627
 Normal 138 (21.94) 36.0 (6.0–96.0)   
 Abnormal background 78 (12.40) 12.0 (4.0–72.0)   
 Epileptiform discharges 413 (65.66) 34.0 (6.0–84.0)   
Cranial CT/MRI findings b 0.649 0.421
 Normal 385 (36.84) 24.0 (5.0–84.0)   
 Abnormal 660 (63.16) 18.0 (3.0–84.0)   
  1. IQR interquartile range, PD puncture drainage, DC decompressive craniectomy, CP cranioplasty
  2. * P < 0.10; ** P < 0.01
  3. aThe data from only 629 patients
  4. bThe data from only 1045 patients