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Table 4 Stratified analysis between total serum carotenoids and BV

From: Association between serum carotenoids and bacterial vaginosis infection among American women

Stratified variable

N

Serum carotenoids concentration

Q1 (3.14–47.69 μg /ml)

Q2 (47.77–64.39 μg /ml)

Q3 (64.40–85.80 μg /ml)

Q4(85.96–331.7 μg /ml)

Age (year)

     

 20–25

283

1.0

0.79 (0.36, 1.75) 0.5596

1.02 (0.46, 2.26) 0.9692

2.30 (0.83, 6.36) 0.1074

 26–33

341

1.0

0.78 (0.34, 1.76) 0.5451

0.78 (0.34, 1.77) 0.5534

0.32 (0.12, 0.86) 0.0234

 34–40

277

1.0

0.76 (0.32, 1.78) 0.5262

0.68 (0.28, 1.63) 0.3826

0.55 (0.21, 1.45) 0.2304

 41–49

351

1.0

0.40 (0.19, 0.84) 0.0164

0.59 (0.26, 1.34) 0.2063

0.44 (0.19, 1.01) 0.0528

Race

     

 Non-Hispanic White

678

1.0

0.51 (0.30, 0.88) 0.0145

0.80 (0.46, 1.41) 0.4376

0.60 (0.31, 1.15) 0.1257

 Non-Hispanic Black

227

1.0

1.28 (0.55, 2.97) 0.5622

0.77 (0.33, 1.78) 0.5392

0.23 (0.07, 0.75) 0.0152

 Other Race

347

1.0

0.81 (0.36, 1.82) 0.6131

1.14 (0.52, 2.50) 0.7401

1.33 (0.59, 3.03) 0.4903

BMI (kg/m2)

     

 Healthy Weight

471

1.0

0.86 (0.43, 1.74) 0.6779

0.89 (0.44, 1.79) 0.7379

0.60 (0.28, 1.29) 0.1906

 Overweight

349

1.0

0.29 (0.13, 0.66) 0.0032

0.49 (0.22, 1.06) 0.0713

0.50 (0.22, 1.15) 0.1044

 Obesity

398

1.0

0.97 (0.54, 1.74) 0.9217

1.20 (0.62, 2.31) 0.5851

0.73 (0.32, 1.66) 0.4521

Birth control pills

     

 Yes

1018

1.0

0.68 (0.46, 1.02) 0.0649

0.73 (0.48, 1.12) 0.1535

0.52 (0.32, 0.84) 0.0073

 No

234

1.0

0.58 (0.22, 1.55) 0.2755

0.74 (0.30, 1.83) 0.5129

0.98 (0.36, 2.67) 0.9738

Smoking status

     

 Smokers

579

1.0

0.52 (0.32, 0.87) 0.0121

0.67 (0.39, 1.14) 0.1368

0.54 (0.28, 1.04) 0.0635

 Non-smokers

673

1.0

0.98 (0.54, 1.76) 0.9457

0.99 (0.55, 1.78) 0.9630

0.77 (0.42, 1.44) 0.4197

Alcohol consumption

     

 Nondrinker

449

1.0

0.82 (0.40, 1.69) 0.5914

0.80 (0.38, 1.68) 0.5592

0.55 (0.24, 1.24) 0.1497

 Moderate alcohol use

401

1.0

0.56 (0.28, 1.12) 0.1013

0.69 (0.33, 1.43) 0.3199

0.75 (0.33, 1.67) 0.4767

 Alcoholism

402

1.0

0.52 (0.28, 0.94) 0.0307

0.75 (0.40, 1.42) 0.3802

0.48 (0.22, 1.01) 0.0539

  1. Model II: age, race, education status, BMI, marital status, PIR, physical activity (Moderate and vigorous activity), C-reactive protein, serum vitamin A, serum vitamin E, serum calcium, high cholesterol level, sexual intercourse, birth control pills, smoking status, and alcohol consumption, were adjusted
  2. In the stratified analyses for a given covariate, that specific covariate was not included in the adjustment model. The stratified analysis exclusively employed Model II
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BMC Infectious Diseases

ISSN: 1471-2334

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