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. Author manuscript; available in PMC: 2014 Aug 5.
Published in final edited form as: Epidemiology. 2012 Nov;23(6):799–805. doi: 10.1097/EDE.0b013e31826cc0cf

TABLE 2.

Distributions of Serum Perfluorochemical Concentrations by Sample and Endometriosis Status (n = 600)

Operative Sample
Population Sample
Perfluorochemicals Tertiles
(ng/ml)
Endometriosis
(n = 190) No. (%)a
None
(n = 283) No. (%)a
Endometriosis
(n = 14) No. (%)a
None
(n = 113) No. (%)a
PFOS
 1st (0.0300 to 5.3562) 51 (27) 105 (37) 3 (21) 44 (39)
 2nd (5.3563 to 9.2455) 64 (34) 99 (35) 6 (43) 30 (27)
 3rd (9.2456 to 43.2229) 75 (40) 79 (28) 5 (36) 39 (35)
  Geometric mean (95% CI) 7.20 (6.55–7.91) 6.11 (5.59–6.68) 7.41 (5.17–10.63) 6.74 (5.85–7.76)
PFOA
 1st (−0.3717 to 1.8599) 49 (26) 105 (37) 4 (29) 45 (40)
 2nd (1.8600 to 3.2160) 67 (35) 96 (34) 6 (43) 30 (27)
 3rd (3.2161 to 9.8213) 74 (39) 82 (29)a 4 (29) 38 (34)
  Geometric mean (95% CI) 2.65 (2.44–2.89) 2.15 (1.96–2.35) 2.49 (1.82–3.41) 2.33 (2.04–2.66)
PFNA
 1st (−0.2100 to 0.5280) 52 (27) 110 (39) 4 (29) 37 (33)
 2nd (0.5281 to 0.8404) 67 (35) 91 (32) 4 (28) 37 (33)
 3rd (0.8405 to 4.0996) 71 (37) 82 (29) 6 (43) 39 (35)
  Geometric mean (95% CI) 0.69 (0.63–0.77) 0.58 (0.53–0.63) 0.71 (0.55–0.92) 0.64 (0.55–0.74)
PFDA
 1st (−0.0340 to 0.1523) 51 (27) 108 (38) 6 (43) 38 (34)
 2nd (0.1524 to 0.2449) 65 (34) 99 (35) 3 (21) 31 (27)
 3rd (0.2450 to 1.7197) 74 (39) 76 (27) 5 (36) 44 (39)
  Geometric mean (95% CI) 0.20 (0.18–0.22) 0.18 (0.16–0.19) 0.17 (0.13–0.22) 0.19 (0.16–0.22)
PFHxS
1st (0.0026 to 0.3277) 54 (28) 110 (39) 3 (21) 36 (32)
2nd (0.3278 to 0.6071) 70 (37) 86 (30) 5 (36) 38 (34)
3rd (0.6072 to 17.1021) 66 (35) 87 (31) 6 (43) 39 (35)
  Geometric mean (95% CI) 0.48 (0.43–0.54) 0.43 (0.39–0.47) 0.59 (0.37–0.96) 0.51 (0.44–0.60)
PFHpA
 1st (0.0000 to 0.0307) 65 (34) 79 (28) 6 (43) 53 (47)
 2nd (0.0308 to 0.0951) 56 (30) 102 (36) 4 (29) 36 (32)
 3rd (0.0952 to 1.4994) 69 (36) 102 (36) 4 (29) 23 (21)
  Geometric mean (95% CI) 0.05 (0.04–0.06) 0.05 (0.05–0.06) 0.03 (0.01–0.08) 0.03 (0.02–0.04)
PFUnDA
 1st (0.0001 to 0.0347) 54 (28) 94 (33) 7 (50) 48 (43)
 2nd (0.0348 to 0.1199) 67 (35) 100 (35) 3 (21) 29 (26)
 3rd (0.1200 to 1.5453) 69 (36) 89 (31) 4 (29) 36 (32)
  Geometric mean (95% CI) 0.06 (0.05–0.08) 0.05 (0.05–0.06) 0.03 (0.01–0.08) 0.05 (0.04–0.06)
PFDoDA
 1st (0.0000 to 0.0173) 56 (30) 101 (36) 3 (21) 42 (38)
 2nd (0.0174 to 0.0342) 72 (38) 94 (33) 5 (36) 28 (25)
 3rd (0.0343 to 0.2338) 62 (33) 88 (31) 6 (43) 42 (38)
  Geometric mean (95% CI) 0.02 (0.02–0.03) 0.02 (0.02–0.02) 0.03 (0.01–0.04) 0.02 (0.02–0.03)
PFOSA
 1st (0.0000 to 0.0146) 57 (30) 95 (34) 3 (21) 48 (43)
 2nd (0.0147 to 0.0311) 75 (40) 94 (33) 3 (21) 26 (23)
 3rd (0.0312 to 0.0900) 58 (31) 94 (33) 8 (57) 38 (34)
  Geometric mean (95% CI) 0.02 (0.02–0.02) 0.02 (0.02–0.02) 0.03 (0.02–0.04) 0.02 (0.01–0.02)

PFUnDA indicates perfluoroundecanoic acid.

Excludes 26 women with missing diagnostic information: 22 women in the operative sample whose surgeries were canceled and 4 women whose MRIs were unreadable for diagnostic purposes.

a

No. (%), except where indicated.