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Table 2 Simple and multiple analyses of psychological and biological factors predicting the IVF pregnancy rate

From: The effects of depression, anxiety and stress symptoms on the clinical pregnancy rate in women undergoing IVF treatment

 

Simple analysis

Multiple analysisa

RRCrude (95% CI)

P

RR Adj (95% CI)

P

Age (years)

0.94 (0.91–0.98)

0.002

0.94 (0.90–0.98)

0.004

Infertility duration (years)

0.96 (0.91–1.02)

0.169

0.98 (0.92–1.04)

0.435

Cause of infertility

 Female factor

1

1

 Male factor

0.81 (0.35–1.87)

0.616

0.83 (0.38–1.82)

0.639

 Both

0.34 (0.09–1.38)

0.133

0.27 (0.07–1.00)

0.050

 Unknown

0.88 (0.47–1.63)

0.676

0.69 (0.36–1.34)

0.278

Anxiety

1.00 (0.94–1.07)

0.974

1.00 (0.91–1.09)

0.917

Depression

0.98 (0.91–1.06)

0.580

0.96 (0.88–1.05)

0.398

Stress

1.01 (0.98–1.05)

0.485

1.01 (0.96–1.07)

0.712

  1. RR: relative risk, CI: confidence interval
  2. aAdjusted for age, infertility duration, and cause of infertility