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. Author manuscript; available in PMC: 2014 Sep 9.
Published in final edited form as: J Infect Dis. 2009 Feb 1;199(3):455–463. doi: 10.1086/596060

Table 3.

Factors associated with change in immunoglobulins within women: according to OC use

Naturally cycling Women
Change: Mean (SD) Difference between visit 2 and 1 (absolute difference) Difference between visit 2 and 3 (absolute difference)
IgA
0.22 (3.17)
IgG
0.17 (3.46)
IgA
0.42 (3.52)
IgG
0.38 (3.57)
Percent Change Percent Change
Age
 26–31 1 1 1 1
 32–35 1.14 (0.80–1.62) 1.16 (0.75–1.79) 0.80 (0.52–1.24) 0.70 (0.43–1.12)
Recent illness
 None at either visit 1 1 1 1
 Sick at one visit only 0.80 (0.54–1.17) 0.59 (0.37–0.94) 1.12 (0.67–1.87) 0.96 (0.54–1.68)
 Sick at both visits 0.36 (0.22–0.60) 0.36 (0.20–0.68) 0.53 (0.29–0.96) 0.38 (0.20–0.73)
Change in specimen weight
 1 unit increase 0.15 (0.09–0.26) 0.17 (0.09–0.31) 0.13 (0.08–0.23) 0.20 (0.11–0.36)
Immunoglobluin level at visit 1
 1 unit (log) increase 0.78 (0.64–0.95) 0.79 (0.64–0.97) 1.11 (0.89–1.39) 1.16 (0.93–1.45)
OC-Using Women
Change between visit 2 and 1 (absolute difference) Change between visit 2 and 3 (absolute difference)

Change: Mean (SD) IgA
0.67 (1.87)
IgG
0.66 (3.48)
IgA
0.98 (2.08)
IgG
0.85 (2.50)
Age
 26–31 1 1 1 1
 32–35 0.86 (0.66–1.12) 1.48 (0.91–2.41) 0.82 (0.55–1.23) 1.21 (0.75–1.95)
Recent illness
 None at either visit 1 1 1 1
 Sick at one visit only 1.24 (0.94–1.63) 0.75 (0.44–1.26) 1.16 (0.77–1.76) 0.77 (0.46–1.28)
 Sick at both visits 1.08 (0.69–1.68) 1.04 (0.47–2.29) 1.10 (0.46–2.63) 0.42 (0.15–1.21)
Change in specimen weight
 1 unit increase 0.52 (0.29–0.92) 0.23 (0.07–0.71) 0.43 (0.20–0.92) 0.24 (0.10–0.60)
Immunoglobluin level at initial visit
 1 unit increase 0.67 (0.56–0.81) 0.51 (0.39–0.67) 1.07 (0.82–1.39) 1.01 (0.80–1.28)