Table 2.
Odds ratio (95% confidence interval) of infertility associated with non-home-prepared meals (per day)
| Variables | Total, n (%) | No. of subjects |
Odds of being infertile |
||
|---|---|---|---|---|---|
| Infertile | Fertile | Age-adjusted model1 | All-adjusted model2 | ||
| Non-home-prepared meals | |||||
| None | 338 (15.8) | 29 | 309 | 1.00 (reference) | 1.00 (reference) |
| Less than or equal to once per day | 1608 (75.0) | 218 | 1390 | 1.41 (0.85, 2.32) | 1.45 (0.82, 2.58) |
| More than once per day | 197 (9.2) | 39 | 158 | 2.47 (1.35, 4.52) | 2.82 (1.48, 5.38) |
| Meals from fast food/pizza places | |||||
| None | 805 (37.6) | 91 | 714 | 1.00 (reference) | 1.00 (reference) |
| Less than or equal to once per day | 1264 (59.0) | 178 | 1086 | 1.41 (0.98, 2.03) | 1.37 (0.96, 1.95) |
| More than once per day | 74 (3.5) | 17 | 57 | 2.66 (1.11, 6.36) | 2.73 (1.15, 6.48) |
| Ready-to-eat foods | |||||
| None | 1333 (62.6) | 176 | 1157 | 1.00 (reference) | 1.00 (reference) |
| Less than or equal to once per day | 786 (36.9) | 104 | 682 | 0.90 (0.67, 1.22) | 0.95 (0.69, 1.30) |
| More than once per day | 12 (0.6) | 2 | 10 | 0.84 (0.10, 6.84) | 1.06 (0.12, 9.79) |
| Frozen meals/pizza | |||||
| None | 1227 (57.3) | 166 | 1061 | 1.00 (reference) | 1.00 (reference) |
| Less than or equal to once per day | 900 (42.0) | 117 | 783 | 1.01 (0.73, 1.39) | 0.98 (0.70, 1.36) |
| More than once per day | 15 (0.7) | 3 | 12 | 1.91 (0.42, 8.75) | 2.12 (0.48, 9.42) |
1
Adjusted models are adjusted for age.
2
Adjusted models are adjusted for age, ethnicity, annual family income, education, occupation, marital status, total number of people in the household, smoking history, alcohol consumption, physical activity, body mass index, and depression.