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. Author manuscript; available in PMC: 2012 Dec 3.
Published in final edited form as: Sex Transm Infect. 2011 Aug;87(5):385–388. doi: 10.1136/sextrans-2011-050005

Table 1.

Demographic and clinical characteristics of participants stratified by hormonal contraception use

(%) No HC Use % (N=5750) Current OCP %(N=1490) P* Current DMPA %(N=478) P**

Clinic Type
 STD 37.7 (2167) 17.8 (265) <0.001 9.8 (47) <0.001
 Family Planning 31.1 (1804) 52.8 (784) <0.001 60.3 (313) <0.001
 Primary Care 30.9 (1779) 29.6 (441) 0.33 24.7 (118) 0.004

Race
 Black 26.2(1506) 13.8 (205) <0.001 30.5 (146) 0.02
 White 39.3 (2260) 63.2 (942) <0.001 37.2 (178) 0.53
 Asian/Pacific Islander 14.5 (831) 6.4 (96) <0.001 3.1(15) <0.001
 American Indian/Alaska 1.2 (68) 0.6 (9) 0.002 0.6 (3) 0.30
 Multiracial 1.7 (96) 1.0 (15) 0.4 2.3 (11) 0.4
 Refused/Unknown 17.2 (989) 15.0 (223) 0.2 26.2 (125) <0.001

Ethnicity
 Hispanic 29.6 (1700) 27.7 (413) 0.67 41.8 (200) <0.001
 Refused/Unknown 1.4 (81) 1.7 (25) 0.40 1.05 (5) 0.28

Age (years)
 <18 3.7 (213) 3.0 (45) 0.20 10.0 (48) <0.001
 18–25 33.6 (1933) 52.0 (775) <0.001 49.8 (238) <0.001
 26–45 48.6 (2795) 42.3 (631) 0.01 38.3 (183) 0.008
 >45 14.1 (809) 2.6 (39) <0.001 1.9 (9) <0.001

Tobacco use
 Current 32.8 (1875) 20.9 (309) <0.001 28.3 (134) 0.05
 Past 18.5 (1065) 21.4 (319) 0.012 15.3 (73) 0.08
 Ever 51.7 (2939) 43.5 (627) <0.001 44.1 (207) 0.002

Condom Use 43.3 (2487) 30.9 (461) <0.001 18.8 (90) <0.001

Total # lifetime partners
 1–3 38.7 (2227) 43.1 (642) 0.05 50.2 (240) 0.002
 4–10 36.2 (2081) 40.0 (596) 0.01 33.5 (160) 0.18
 >10 23.8 (1371) 16.3 (243) <0.001 16.1 (77) 0.002

# Partners last 6 months
 0–3 93.4 (5340) 95.3 (1414) 0.01 96.4 (448) 0.01
 4–10 2.1 (123) 1.1 (17) 0.01 0.6 (3) 0.001
 >10 3.3 (187) 3.0 (45) 0.70 4.0 (19) 0.76

# New partners last 6m
 0 61.7 (3545) 66.0 (984) 0.002 70.1 (335) <0.001
 1–3 31.2 (1795) 28.9 (430) 0.08 23.6 (113) 0.01
 4–10 2.1 (123) 1.1 (17) 0.01 0.6 (3) 0.03
 >10 3.3 (187) 3.0 (45) 0.74 4.0 (19) 0.34

Age at sexual debut
 ≤14 19.3 (1109) 13.1 (194) <0.001 20.8 (99) 0.47
 15–18 50.2 (2885) 61.2 (912) <0.001 58.4 (279) 0.001
 >18 29.5 (1697) 25.0 (373) 0.01 20.7 (99) 0.002

#of children
 0 21.4 (1229) 21.1 (315) 0.9 21.3 (102) 0.9
 1–2 36.6 (2102) 28.1 (418) <0.001 49.6 (237) <0.001
 >2 20.7 (1188) 8.3 (123) <0.001 12.3 (59) <0.001
 Missing/unknown 21.4 (1231) 42.6 (634) <0.001 16.7 (80) 0.02

Concomitant Infections***
 HIV 0.1 (2) 0 (0) <0.001 0 (0) 0.84
 GC 2.7 (110) 0.7 (6) <0.001 0.6 (2) 0.02
 CT 7.1 (303) 4.1 (41) 0.001 8.2 (29) 0.39
 Trichomonas 4.5 (254) 1.0 (14) <0.001 2.4 (11) 0.03
 BV 21.2 (1201) 9.6 (140) <0.001 8.39 (39) <0.001
 Candidiasis 10.2 (577) 11.3 (164) 0.25 7.1 (33) 0.001

HPV ***
 Any 33.4 (1841) 34.2 (494) 0.58 37.2 (171) 0.10
 LRʃ 18.7 (1030) 17.7 (256) 0.39 19.6 (90) 0.64
 HRʃ 24.2 (1335) 25.7 (371) 0.26 28.9 (133) 0.03
 Clade A7^ 9.7 (535) 9.8 (142) 0.9 12.1 (56) 0.09
 Clade A9^^ 11.1 (613) 13.1 (189) 0.8 15 (69) 0.01
 16 4.8 (265) 7.1 (102) 0.001 8.0 (37) 0.002
 18 2.2 (122) 2.1 (30) 0.75 2.8 (13) 0.40
 45 1.8 (99) 1.4 (20) 0.28 3.0 (14) 0.06
 31 1.8 (101) 1.7 (25) 0.79 2.0 (9) 0.84

Pap Results
 Normal 80.9 (4651) 78.4 (1169) 0.05 80.3 (384) 0.76
 ASC-US 7.9 (456) 9.9 (148) 0.01 9.2 (44) 0.24
 ASC-H/ AGC 0.9 (49) 0.8 (12) 1.0 0.2 (1) 0.18
 LSIL/HSIL/AIS 6.1 (351) 7.3 (108) 0.12 4.8 (23) 0.31
 Missing 4.2 (243) 3.6 (53) 0.30 5.4 (26) 0.24

OCP= oral contraceptive pill; DMPA= depo-medroxyprogesterone acetate; NS= not statistically significant; LR= low risk; HR= high risk; GC= gonorrhea; CT= chlamydia; BV= bacterial vaginosis; ASCUS= atypical squamous cells of unclear significance; LSIL=low-grade squamous intraepithelial lesion; HSIL= high-grade squamous epithelial lesion; AIS= adenocarcinoma in situ.

*

Chi-squared p-values comparing ‘No HC’ group to ‘Current OCP’ group;

**

Chi-squared p-values comparing ‘No HC’ group to ‘Current DMPA’ group

***

Of specimens tested

ʃ

Women with concomitant detection of both LR and HR types were excluded from this analysis

^

Clade A7 includes HPV types 18, 39, 45, 59, and 68

^^

Clade A9 includes HPV types 16, 31, 33, 35, 52, and 58