Table 2.
Comparisons of different levels of maternal stress for the odds (odds ratio and reciprocal) of having female versus male offspring at birth.
| Level1 | /Level2 | Odds Ratio | 95% CI of the odds ratio |
|---|---|---|---|
| 2 | 1 | 0.94 | 1.07 |
| 3 | 1 | 1.12 | 0.89 |
| 3 | 2 | 1.20 | 0.83 |
| 4 | 1 | 1.05 | 0.95 |
| 4 | 2 | 1.12 | 0.89 |
| 4 | 3 | 0.94 | 1.07 |
| 5 | 1 | 0.98 | 1.02 |
| 5 | 2 | 1.05 | 0.95 |
| 5 | 3 | 0.87 | 1.14 |
| 5 | 4 | 0.93 | 1.07 |
| 6 | 1 | 0.99 | 1.01 |
| 6 | 2 | 1.06 | 0.94 |
| 6 | 3 | 0.88 | 1.13 |
| 6 | 4 | 0.94 | 1.06 |
| 6 | 5 | 1.01 | 0.99 |
| 7 | 1 | 1.44 | 0.69 |
| 7 | 2 | 1.54 | 0.65 |
| 7 | 3 | 1.28 | 0.78 |
| 7 | 4 | 1.37 | 0.73 |
| 7 | 5 | 1.47 | 0.68 |
| 7 | 6 | 1.45 | 0.69 |
| 8 | 1 | 0.97 | 1.03 |
| 8 | 2 | 1.04 | 0.97 |
| 8 | 3 | 0.86 | 1.16 |
| 8 | 4 | 0.92 | 1.08 |
| 8 | 5 | 0.99 | 1.01 |
| 8 | 6 | 0.98 | 1.02 |
| 8 | 7 | 0.67 | 1.49 |
| 9 | 1 | 1.54 | 0.65 |
| 9 | 2 | 1.64 | 0.61 |
| 9 | 3 | 1.37 | 0.73 |
| 9 | 4 | 1.47 | 0.68 |
| 9 | 5 | 1.57 | 0.64 |
| 9 | 6 | 1.55 | 0.64 |
| 9 | 7 | 1.07 | 0.94 |
| 9 | 8 | 1.59 | 0.63 |
| 10 | 1 | 0.82 | 1.22 |
| 10 | 2 | 0.87 | 1.14 |
| 10 | 3 | 0.73 | 1.37 |
| 10 | 4 | 0.78 | 1.28 |
| 10 | 5 | 0.83 | 1.20 |
| 10 | 6 | 0.83 | 1.21 |
| 10 | 7 | 0.57 | 1.76 |
| 10 | 8 | 0.84 | 1.18 |
| 10 | 9 | 0.53 | 1.88 |
The data set includes information on all births collected between 2000 and 2005 by Addenbrooke's hospital in Cambridge, UK. Level 1 indicates the stress level level2 is compared to. Stress levels range from 1 (low) to 10 (highest). Stay-at-home mothers were ranked in job stress level 8. CI = confidence interval.