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. 2024 Aug 7;22:320. doi: 10.1186/s12916-024-03508-7

Table 3.

Univariate results for the surgically confirmed recurrent endometriosis analysis using ultrasound data

Non-endometriosis control Single endometriosis diagnosis Recurrent endometriosis Non-endometriosis control vs recurrent endometriosis Non-endometriosis control vs single endometriosis diagnosis Single endometriosis diagnosis vs recurrent endometriosis
Univariate analysis
OR, 95% CI p value OR, 95% CI p value OR, 95% CI p value
Uterine volume (ml)
n 67 105 63
 Mean (range) 69.70 (16.00–308.40) 67.00 (23.00–213.00) 85.81 (23.20–370.00) 0.119 0.672 0.017
 Under 40 ml 16 (23.9) 14 (13.3) 5 (7.9)
 40–110 ml 44 (65.7) 82 (78.1) 45 (71.4) 3.27 (1.10–9.70) 0.033 2.13 (0.95–4.77) 0.066 1.54 (0.52–4.54) 0.437
 > 110 ml 7 (10.4) 9 (8.6) 13 (20.6) 5.94 (1.52–23.18) 0.010 1.47 (0.43–4.98) 0.537 4.04 (1.07–15.27) 0.039
Log uterine volume (ml)
n 67 105 63
 Mean (range) 1.77 (1.20–2.49) 1.79 (1.36–2.33) 1.87 (1.37–2.57) 0.023 0.460 0.021
Uterine position
 Anteverted 59 (90.8) 83 (79.8) 48 (77.4)
 Retroverted 6 (9.2) 20 (19.2) 12 (19.4) 2.46 (0.86–7.04) 0.094 2.37 (0.90–6.26) 0.082 1.04 (0.47–2.31) 0.928
 Axial 0 (0.0) 1 (1.0) 2 (3.2) N/A N/A 3.46 (0.31–39.15) 0.316
Fibroids present
 No (n, %) 63 (88.7) 103 (88.8) 54 (79.4)
 Yes (n, %) 8 (11.3) 13 (11.2) 14 (20.6) 2.04 (0.80–5.24) 0.137 0.99 (0.39–2.53) 0.990 2.05 (0.90–4.68) 0.087
No. of fibroids
n 71 116 68
 Mean (range) 0.23 (0–5) 0.13 (0–2) 0.34 (0–4) 0.421 0.294 0.034
Volume of largest fibroid (ml)
n 6 11 11
 Mean (range) 58.62 (0.40–174.00) 2.89 (0.10–8.00) 27.74 (0.60–246.50) 0.414 0.148 0.188
Ovarian cysts present
 No (n, %) 54 (76.1) 77 (66.4) 41 (60.3)
 Yes (n, %) 17 (23.9) 39 (33.6) 27 (39.7) 2.09 (1.01–4.34) 0.048 1.61 (0.83–3.14) 0.163 1.30 (0.70–2.42) 0.407
No. of ovarian cysts
n 71 116 68
 Mean (range) 0.34 (0–4) 0.67 (0–10) 0.62 (0–3) 0.047 0.078 0.773
Polycystic ovaries present
 No (n, %) 61 (85.9) 101 (87.1) 65 (95.6)
 Yes (n, %) 10 (14.1) 15 (12.9) 3 (4.4) 0.28 (0.07–1.07) 0.063 0.91 (0.38–2.14) 0.822 0.31 (0.09–1.12) 0.073
Adenomyosis present
 No (n, %) 66 (93.0) 92 (79.3) 51 (75.0)
 Yes (n, %) 5 (7.0) 24 (20.7) 17 (25.0) 4.40 (1.52–12.73) 0.006 3.44 (1.25–9.49) 0.017 1.28 (0.63–2.60) 0.498
Adenomyosis linear striations present
 No (n, %) 68 (95.8) 105 (90.5) 62 (91.2)
 Yes (n, %) 3 (4.2) 11 (9.5) 6 (8.8) 2.19 (0.53–9.15) 0.281 2.37 (0.64–8.82) 0.197 0.92 (0.33–2.62) 0.882
Adenomyosis heterogeneous myometrium
 No (n, %) 71 (100.0) 111 (95.7) 61 (89.7)
 Yes (n, %) 0 (0.0) 5 (4.3) 7 (10.3) N/A N/A 2.55 (0.78–8.37) 0.123
Adenomyosis thickened posterior wall
 No (n, %) 68 (95.8) 105 (90.5) 61 (89.7)
 Yes (n, %) 3 (4.2) 11 (9.5) 7 (10.3) 2.60 (0.64–10.51) 0.180 2.37 (0.64–8.82) 0.197 1.10 (0.40–2.97) 0.858
Endometriosis present (including OMA)
 No (n, %) 69 (97.2) 84 (72.4) 40 (58.8)
 Yes (n, %) 2 (2.8) 32 (27.6) 28 (41.2) 24.15 (5.46–106.78) < 0.001 13.14 (3.04–56.80) 0.001 1.84 (0.98–3.46) 0.059
Endometriosis present (excluding OMA)
 No (n, %) 69 (97.2) 112 (96.6) 56 (82.4)
 Yes (n, %) 2 (2.8) 4 (3.4) 12 (17.6) 7.39 (1.59–34.41) 0.011 1.23 (0.22–6.91) 0.812 6.00 (1.85–19.45) 0.003
Bilateral endometriomas
 No (n, %) 71 (100.0) 107 (92.2) 63 (92.6)
 Yes (n, %) 0 (0.0) 9 (7.8) 5 (7.4) N/A N/A 0.94 (0.30–2.94) 0.920
Adhesions (ultrasound)
 No (n, %) 70 (98.6) 110 (94.8) 53 (77.9)
 Yes (n, %) 1 (1.4) 6 (5.2) 15 (22.1) 19.81 (2.54–154.74) 0.004 3.82 (0.45–32.39) 0.219 5.19 (1.91–14.13) 0.001

OMA Endometrioma