Association between preoperative platelet and 30-day postoperative mortality of adult patients undergoing craniotomy for brain tumors: data from the American College of Surgeons National Surgical Quality Improvement Program database

Table 6 The results of the piecewise linear regression

Emergency case	No 30-day mortality (OR, 95% CI, P value)		Yes 30-day mortality (OR, 95% CI, P value)
Infection point of PLT	235		195
≤235	0.992 (0.989, 0.995) < 0.0001	≤ 195	0.995 (0.983, 1.007) 0.4273
>235	1.001 (1.000, 1.003) 0.1413	> 195	1.003 (1.000, 1.006) 0.0389
P value from the log likelihood ratio test	< 0.001		0.250

The model adjusted for BMI, sex, race, age range, bleeding disorders, diabetes, dialysis, smoking status, severe COPD, preoperative transfusions, hypertension, steroid use for chronic condition, preoperative systemic sepsis, operation time, serum Na, BUN, Cr, WBC count, and HCT count
OR odds ratios; CI confidence

ISSN: 1471-2377