Table 2.
Clinical characteristics and univariable logistic regression of patients with post-operative bleeding and controls using data from (SQRTPA)
| Characteristics | Cases N = 173 (%) | Controls N = 173 (%) | Odds Ratio (Confidence Interval) | * P value |
|---|---|---|---|---|
| Indication for surgery | ||||
| Compression symptoms | 68 (39) | 60 (35) | 1.00 | 0.28 |
| Malignancy | 27 (16) | 32 (19) | 0.74 (0.40–1.38) | |
| Suspect for malignancy | 40 (23) | 42 (24) | 0.84 (0.48–1.46) | |
| Thyrotoxicosis | 38 (22) | 35 (20) | 0.95 (0.53–1.70) | |
| Other | 0 | 4 (2) | ||
| Type of operation | ||||
| Lobectomy | 82 (47) | 87 (50) | 1.00 | 0.17 |
| Thyroidectomy | 77 (45) | 65 (38) | 1.25 (0.80–1.96) | |
| Any type of thyroid resection | 11 (6) | 14 (8) | 0.83 (0.35–1.94) | |
| Other operations | 3 (2) | 7 (4) | 0.45 (0.11–1.27) | |
| Operation time (minutes) | ||||
| <60 | 5 (3) | 11 (6) | 1.00 | 0.18 |
| 60–120 | 50 (29) | 60 (35) | 1.83 (0.59–5.62) | |
| >120 | 58 (33) | 44 (25) | 2.85 (0.93–8.95) | |
| Missing | 60 (35) | 58 (34) | 2.27 (0.70–6.95) | |
| Gland weight (grams) | ||||
| <50 | 75 (43) | 83 (48) | 1.00 | 0.46 |
| 50–200 | 46 (27) | 53 (30.5) | 0.96 (0.58–1.58) | |
| 200–500 | 14 (8) | 10 (6) | 1.54 (0.64–3.69) | |
| >500 | 2 (1) | 1 (0.5) | 2.21 (0.19–24.9) | |
| Missing | 36 (21) | 26 (15) | 1.53 (0.84–2.77) | |
| Substernal gland | ||||
| No | 149 (86) | 157 (91) | 1.00 | 0.18 |
| Yes | 24 (14) | 16 (9) | 1.58 (0.80–3.09) | |
| Sternotomy | ||||
| No | 171 (99) | 173 (100) | 1.00 | 0.15 |
| Yes | 2 (1) | 0 | na | |
| Lymph node dissection | ||||
| No | 146 (84) | 143 (83) | 0.66 | |
| yes | 27 (16) | 30 (17) | 0.88 (0.49–1.55) | |
| Thymus operation | ||||
| No | 172 (99.5) | 172 (99.5) | 1.00 | 1.00 |
| Yes | 1 (0.5) | 1 (0.5) | 1.00 (0.06–16.11) | |
| Reoperation | ||||
| No | 156 (90) | 148 (86) | 1.00 | 0.19 |
| Yes | 17 (10) | 25 (14) | 0.64 (0.33–1.24) | |
| Tumour Classification (TNM) | 60(100) | 62(100) | ||
| pT0 | 4 (7) | 3 (5) | 1.00 | 0.36 |
| pT1 | 5 (8) | 4 (6) | 0.93 (0.12–6.87) | |
| pT2 | 6 (10) | 16 (26) | 0.28 (0.04–1.64) | |
| pT3 | 14 (23) | 13 (21) | 0.80 (0.15–4.32) | |
| pT4 | 22 (37) | 17 (27) | 0.97 (0.19–4.93) | |
| pTx | 9 (15) | 9 (15) | 0.75 (0.12–4.35) | |
| N0 | 16 (27) | 20 (32) | 1.00 | 0.75 |
| N1 | 30 (50) | 27 (44) | 1.38 (0.60–3.21) | |
| Nx | 14 (23) | 15 (24) | 1.16 (0.43–3.11) | |
| M0 | 22 (37) | 34 (55) | 1.00 | 0.06 |
| M1 | 15 (25) | 7 (11) | 3.31 (1.16–9.41) | |
| Mx | 23 (38) | 21 (34) | 1.69 (0.38–1.10) | |
(*) P-values present the results of comparison between groups.