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Table 3 Relative risk and corresponding 95% CI for having d3 blood test and ultrasound by factor

From: Reducing day 3 baseline monitoring bloodwork and ultrasound for patients undergoing timed intercourse and intrauterine insemination treatment cycles

 

Bloodwork

TVUS

Intervention (Post vs. Pre)

0.37 [0.32,0.44]**

0.35 [0.30,0.41]**

Age

  < 35

1.00 [1.00,1.00]

1.00 [1.00,1.00]

 36–39

1.02 [0.88,1.17]

1.02 [0.88,1.17]

  > 39

0.97 [0.80,1.19]

0.92 [0.76,1.13]

Cycle Type

 IC

1.00 [1.00,1.00]

1.00 [1.00,1.00]

 IUI

0.88 [0.77,1.01]

0.89 [0.77,1.02]

 DI-IUI

0.88 [0.57,1.35]

0.92 [0.60,1.41]

Protocol

 Natural

1.00 [1.00,1.00]

1.00 [1.00,1.00]

 COS (clomid + Letrozole)

2.86 [1.66,4.92]**

4.55 [2.65,7.84]**

 Ovulation Induction (Letrozole)

3.48 [2.03,5.97]**

5.36 [3.12,9.18]**

Hx cysts

 No

1.00 [1.00,1.00]

1.00 [1.00,1.00]

 Yes

1.37 [1.11,1.70]**

1.45 [1.17,1.80]**

Hx cancelled

 No

1.00 [1.00,1.00]

1.00 [1.00,1.00]

 Yes

1.23 [1.00,1.53]*

1.17 [0.95,1.46]

Doctor

 

1.00 [1.00,1.00]

 1

1.00 [1.00,1.00]

 2

0.82 [0.58,1.14]

0.79 [0.57,1.11]

 3

1.21 [0.93,1.58]

1.21 [0.93,1.57]

 4

1.23 [0.97,1.54]

1.19 [0.94,1.49]

 5

1.08 [0.84,1.39]

1.14 [0.89,1.47]

 6

0.95 [0.74,1.23]

1.02 [0.79,1.31]

 7

1.35 [1.01,1.81]*

1.41 [1.05,1.88]*

 8

0.90 [0.48,1.67]

0.88 [0.47,1.64]

Centre

 Downtown Toronto

1.00 [1.00,1.00]

1.00 [1.00,1.00]

 Vaughan

0.66 [0.50,0.86]**

0.68 [0.52,0.89]**

 North York

0.76 [0.59,0.96]*

0.74 [0.59,0.95]*

 Mississauga

1.68 [0.94,3.00]

1.70 [0.95,3.03]

Observations

1144

1144

Pseudo R2

0.024

0.027

  1. Exponentiated coefficients; 95% confidence intervals in brackets
  2. * p < 0.05, ** p < 0.01