Table 1.
Characteristics and risk for bleeding using uni- and multivariable logistic regression in patients operated for thyroid disease 2004–2010 in the Swedish quality register for thyroid surgery (SQRTPA)
| Characteristics | Patients with postoperative bleeding n = 174(%) | Patients without postoperative bleeding n = 9320(%) | Univariable analysis OR (CI) | Multivariable analysis OR (CI) | *P value |
|---|---|---|---|---|---|
| Age (years) | |||||
| <30 | 11 (6) | 1156 (12) | 1.00 | 1.00 | <0.01 |
| 30–50 | 43 (25) | 3531 (38) | 1.27 (0.65–2.48) | 1.38 (0.70–2.71) | |
| 50–70 | 81 (47) | 3463 (37) | 2.45 (1.30–4.63) | 2.58 (1.33–5.00) | |
| >70 | 39 (22) | 1170 (13) | 3.50 (1.78–6.87) | 3.62 (1.76–7.43) | |
| Gender | |||||
| Female | 115 (66) | 7546 (81) | 1.00 | 1.00 | <0.01 |
| Male | 59 (34) | 1774 (19) | 2.18 (1.58–2.99) | 1.92 (1.38–2.67) | |
| Indication for surgery | |||||
| Compression symptoms | 69 (40) | 3605 (39) | 1.00 | 1.00 | 0.38 |
| Malignancy | 27 (16) | 1133 (12) | 1.24 (0.79–1.95) | 1.59 (0.84–3.03) | |
| Suspect for malignancy | 41 (24) | 2269 (24) | 0.94 (0.63–1.39) | 1.05 (0.68–1.62) | |
| Thyrotoxicosis | 37 (21) | 2200 (24) | 0.87 (0.58–1.31) | 1.30 (0.77–2.17) | |
| Missing | 0 | 113 (1) | na | na | |
| Type of operation | |||||
| Lobectomy | 83 (48) | 4471 (48) | 1.00 | 1.00 | 0.68 |
| Thyroidectomy | 77 (44) | 3910 (42) | 1.06 (0.77–1.43) | 0.95 (0.62–1.43) | |
| Thyroid resection | 11 (6) | 636 (7) | 0.93 (0.49–1.75) | 0.87 (0.46–1.66) | |
| Other operations ** | 3 (2) | 303 (3) | 0.53 (0.16–1.69) | 0.41 (0.11–1.42) | |
| Operation time (minutes) | |||||
| <60 | 5 (3) | 488 (5) | 1.00 | 1.00 | 0.24 |
| 60–120 | 50 (29) | 3055 (33) | 1.59 (0.63–4.02) | 1.45 (0.57–3.71) | |
| >120 | 57 (33) | 2919 (31) | 1.90 (0.76–4.77) | 1.58 (0.60–4.13) | |
| Missing | 62 (35) | 2858 (31) | 2.11 (0.84–5.29) | 1.86 (0.72–4.74) | |
| Gland weight (grams) | |||||
| <50 | 66 (38) | 4149(45.5) | 1.00 | 1.00 | 0.02 |
| 50–200 | 41 (24) | 2230 (24) | 1.15 (0.78–1.71) | 0.92 (0.59–1.42) | |
| 200–500 | 14 (8) | 378 (4) | 2.34 (1.30–4.20) | 1.46 (0.75–2.84) | |
| >500 | 2 (1) | 37 (0.5) | 3.39 (0.80–14.39) | 2.34 (0.53–10.39) | |
| Missing | 51 (29) | 2528(27) | 1.26 (0.87–1.83) | 1.13 (0.76–1.67) | |
| Substernal gland | |||||
| No | 150 (86) | 8532 (92) | 1.00 | 1.00 | 0.01 |
| Yes | 24 (14) | 788 (8) | 1.73 (1.11–2.68) | 1.17 (0.71–1.95) | |
| Sternotomy | |||||
| No | 172(99) | 9275(99.5) | 1.00 | 1.00 | 0.21 |
| Yes | 2 (1) | 45 (0.5) | 2.39 (0.57–9.95) | 1.22 (0.27–5.51) | |
| Lymph node dissection | |||||
| No | 147 (84) | 7854 (84) | 1.00 | 1.00 | 0.94 |
| Yes | 27 (16) | 1466 (16) | 0.98 (0.65–1.48) | 0.77 (0.44–1.33) | |
| Thymus operation | |||||
| No | 173 (99.5) | 9276 (99.5) | 1.00 | 1.00 | 0.84 |
| Yes | 1 (0.5) | 44(0.5) | 1.22 (0.16–8.89) | 1.30 (0.17–9.85) | |
| Previous thyroid operation | |||||
| No | 157 (90) | 8271 (89) | 1.00 | 1.00 | 0.54 |
| Yes | 17 (10) | 1049 (11) | 0.85 (0.51–1.41) | 0.78 (0.44–1.39) | |
(*) P values present the results of comparison between groups.
(**) Other operations include missing information on operation type and other operation types than lobectomy, resection and total thyroidectomy.