Table IV.
Relationship between preoperative HbA1C, BMI and SSI rate.
| BMI | ||||||
|---|---|---|---|---|---|---|
|
|
||||||
| HbA1C | <25 All/SSI (%) | 25-29.9 All/SSI (%) | 30-34.9 All/SSI (%) | ≥35 All/SSI (%) | Total All/SSI (%) | P-valuea |
| <42 | 13/1 (8) | 5/1 (20) | 12/2 (17) | 6/1 (17) | 36/5 (14) | 0.844 |
| 42-48 | 3/0 (−) | 14/3 (21) | 18/5 (28) | 14/4 (29) | 49/12 (25) | 0.891 |
| >48 | 18/1 (6) | 46/14 (30) | 41/13 (29) | 32/19 (59) | 137/47 (34) | <0.001 |
| Total | 34/2 (6) | 65/18 (28) | 71/20 (28) | 52/24 (46) | 222/64 (29) | <0.001c |
| P-valueb | 1 | 0.898 | 0.666 | 0.059 | 0.042d | |
BMI, body mass index; HbA1C, glycated haemoglobin; SSI, surgical site infection in category.
a
Fisher's exact test was used to analyse P-value for SSI in individual HbA1C category against all BMI categories aside from total;
b
Fisher's exact test was used to analyse P-value for SSI in individual BMI category against all HbA1C categories aside from total;
c
Fisher's exact test was used to analyse the P-value between SSI and body mass index for all patients with HbA1c available;
d
Fisher's exact test was used to analyse the P-value between SSI and HbA1c for all patients with BMI measurements available.