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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: Fertil Steril. 2015 Jul 20;104(4):972–979. doi: 10.1016/j.fertnstert.2015.06.037

TABLE 2.

Men’s meat intake and fertilization rate

Adjusted mean fertilization rate (95% Confidence Interval)
MODEL Model 1 Model 2 Model 3 Model 4
Total number of cycles 206 206 206 183
Quartile intake of total meat [Range] (Number of Men)
Q1 [0.00-1.06] (N=52) 0.72 (0.65 -0.78) 0.73 (0.65 -0.79) 0.72 (0.64- 0.79) 0.74 (0.66-0.81)
Q2 [1.07-1.40] (N=45) 0.69 (0.62-0.76) 0.70 (0.62 -0.77) 0.69 (0.61- 0.77) 0.69 (0.61 -0.76)
Q3 [1.41-1.82] (N=44) 0.74 (0.67 -0.79) 0.74 (0.67 -0.80) 0.72 (0.64 -0.79) 0.76 (0.68- 0.82)
Q4 [ 1.84-4.97] (N=65) 0.73 (0.66-0.79) 0.72 (0.65-0.79) 0.71 (0.63 -0.78) 0.72 (0.63 -0.79)
P trend .64 .94 .95 .85
Quartile intake of unprocessed red meat
Q1 [0.00-0.12] (N=53) 0.75 (0.68-0.81) 0.76 (0.68- 0.81) 0.75 (0.68 -0.81) 0.78 (0.70 -0.83)
Q2 [0.16-0.24] (N=42) 0.68 (0.61- 0.74) 0.68 (0.61 -0.74) 0.67 (0.58- 0.75) 0.68 (0.60 -0.75)
Q3 [0.24-0.30] (N=46) 0.75 (0.68- 0.81) 0.75 (0.68- 0.81) 0.74 (0.65 -0.80) 0.76 (0.68 -0.82)
Q4 [0.36-1.29] (N=65) 0.71 (0.64-0.76) 0.71 (0.64-0.76) 0.70 (0.62 -0.76) 0.70 (0.62 -0.77)
P trend .65 .52 .54 .39
Quartile intake of processed meat
Q1 [0.00-0.22] (N=52) 0.73 (0.67- 0.79) 0.76 (0.69-0.82) 0.75 (0.67- 0.81) 0.77 (0.70- 0.83)
Q2 [0.24-0.38] (N=46) 0.71 (0.64- 0.77) 0.71 (0.64 -0.78) 0.71 (0.63- 0.78) 0.73 (0.64- 0.79)
Q3 [0.38-0.59] (N=49) 0.74 (0.68 -0.80) 0.74 (0.67- 0.80) 0.73 (0.65- 0.79) 0.75 (0.67- 0.81)
Q4 [0.62-2.79] (N=59) 0.70 (0.62- 0.76) 0.68 (0.60-0.75) 0.67 (0.58 -0.75) 0.66 (0.57- 0.74)
P trend .54 .17 .18 .09
Quartile intake of poultry
Q1 [0.00-0.18] (N=54) 0.66 (0.58 -0.72) 0.65 (0.57 -0.72) 0.65 (0.56- 0.72) 0.65 (0.56 -0.73)
Q2 [0.18-0.42] (N=45) 0.72 (0.65 -0.79) 0.72 (0.65- 0.78) 0.71 (0.62- 0.78) 0.73 (0.64- 0.80)
Q3 [0.45-0.71] (N=52) 0.74 (0.68- 0.80) 0.75 (0.68- 0.80) 0.74 (0.66- 0.80) 0.75 (0.68- 0.81)
Q4 [0.71-2.82] (N=55) 0.76 (0.70- 0.81)* 0.77 (0.70- 0.82)* 0.76 (0.69 -0.82)* 0.78 (0.71 -0.84)*
P trend .05 .03 .03 .04
Quartile intake of dark fish
Q1 [0.00-0.02] (N=47) 0.69 (0.62 -0.76) 0.70 (0.62 -0.76) 0.69 (0.61-0.76) 0.72 (0.64-0.79)
Q2 [0.04-0.08 (N=50) 0.78 (0.72 -0.83) 0.78 (0.71- 0.83) 0.77 (0.70-0.83) 0.79 (0.72 -0.85)
Q3 [0.10-0.14] (N=50) 0.71 (0.64-0.77) 0.71 (0.63 -0.77) 0.70 (0.61-0.77) 0.72 (0.64 -0.78)
Q4 [0.16-0.80] (N=59) 0.71 (0.64 -0.76) 0.71 (0.64- 0.77) 0.70 (0.62-0.77) 0.70 (0.62-0.76)
P trend .99 .92 .95 .48
Quartile intake of white fish
Q1 [0.00-0.02] (N=67) 0.77 (0.71 -0.82) 0.77 (0.71-0.82) 0.76 (0.70-0.81) 0.79 (0.73-0.84)
Q2 [0.04-0.04] (N=15) 0.70 (0.57- 0.81) 0.70 (0.56 -0.81) 0.67 (0.52 -0.80) 0.71 (0.56 -0.83)
Q3 [0.08-0.10] (N=85) 0.70 (0.64-0.74) 0.70 (0.64-0.75) 0.69 (0.63 -0.75) 0.70 (0.64 -0.75)
Q4 [0.14-0.51] (N=39) 0.70 (0.62-0.77) 0.71 (0.62 -0.78) 0.69 (0.60 -0.77) 0.70 (0.60-0.78)
P trend .11 .18 .16 .09
Category of shellfish intake
Q1 [0.00- −0.02] (N=77) 0.72 (0.67 -0.77) 0.72 (0.67 -0.77) 0.71 (0.65 -0.77) 0.74 (0.68 -0.80)
Q2 [0.08- −0.43] (N=129) 0.72 (0.68 -0.76) 0.72 (0.68-0.76) 0.71 (0.66 -0.76) 0.72 (0.67 -0.76)
P trend .87 .91 .99 .53
Category of organ meat
Q1 [0.00] (N=163) 0.73 (0.69 -0.76) 0.73 (0.70- 0.77) 0.72 (0.68 -0.77) 0.74 (0.70 -0.78)
Q2[0.02--0.94] (N=43) 0.68 (0.60 -0.75) 0.68 (0.59- 0.75) 0.67 (0.58- 0.75) 0.67 (0.58 -0.76)
P trend .25 .20 .21 .16

Note: Model 1: Adjusted for age and total energy intake; Model 2: adjusted for total energy intake, age, BMI, alcohol, caffeine, Prudent dietary pattern, and Western dietary pattern; Model 3: model 2+ infertility diagnoses, mode of insemination; Model 4: model 2+ female meat intake.

*

P<0.05 compared to men in the lowest category of intake.

Tests for trend across quartiles using the median activity level in each quartile as a continuous variable.