Table I.
Characteristics of men attending a fertility clinic according to pretreatment categories of total fat intake.
| Total fat intake |
P-value* | |||
|---|---|---|---|---|
| Low | Intermediate | High | ||
| Median intake (range), % of calories | 26 (19–29) | 32 (30–33) | 37 (34–44) | |
| N | 32 | 34 | 33 | |
| Age, years | 36.4 (5.6) | 36.0 (5.1) | 36.9 (5.5) | 0.80 |
| BMI, kg/m2 | 26.8 (3.9) | 27.4 (3.8) | 26.8 (4.5) | 0.78 |
| Caffeine intake, mg/day | 161 (135) | 204 (113) | 159 (123) | 0.25 |
| Alcohol intake, g/day | 14 (19) | 18 (13) | 14 (14) | 0.50 |
| Total energy intake, kcal/day | 2043 (718) | 2058 (568) | 2154 (585) | 0.74 |
| Smoking status, % | ||||
| Never smoker | 59 | 74 | 67 | 0.70 |
| Past smoker | 34 | 21 | 30 | |
| Current smoker | 6 | 6 | 3 | |
| Race/ethnicity, % | ||||
| White/Caucasian | 78 | 94 | 94 | 0.16 |
| African American | 6 | 0 | 3 | |
| Asian | 6 | 6 | 3 | |
| Other | 9 | 0 | 0 | |
| Primary infertility diagnosis, % | ||||
| Ovulatory disorder | 10 | 18 | 10 | 0.91 |
| Other female factor | 34 | 23 | 33 | |
| Male factor | 22 | 21 | 24 | |
| Unexplained | 34 | 38 | 33 | |
| Previous infertility exam, % | 66 | 76 | 79 | 0.49 |
| Abstinence time, days | 5.1 (10.3) | 8.1 (30.9) | 3.4 (2.4) | 0.60 |
| Semen analysis | ||||
| Total sperm count <40 million/ml, % | 0 | 12 | 3 | 0.12 |
| Concentration <20 million/ml, % | 3 | 18 | 15 | 0.14 |
| Motility <50% motile, % | 59 | 53 | 45 | 0.55 |
| Morphology <4% normal, % | 34 | 32 | 30 | 0.96 |
| Normal semen analysisa, % | 38 | 41 | 45 | 0.82 |
aAbove World Health Organization reference values for concentration and motility and Kruger criteria for morphology.
*P-value from the analysis of variance for continuous variables and Fisher's exact test for categorical variables.