Table 6 Absolute frequencies, outcome prevalences, exposure prevalences, crude and pooled prevalence ratio (PR) estimates, and relative confounding for the analysis of the modified data using mother in a paid job as the outcome, father living with the family as the risk factor and social class as confounder (situation 3 modified).
First stratum: High social class | |||||
|---|---|---|---|---|---|
Mother employed | No | All | |||
N | Prev. | N | N | Prev. exp. = 15.0% | |
Father Present | 73 | 90.1% | 8 | 81 | PR = 1.80 |
No | 230 | 50.0% | 230 | 460 | M-H weight = 34.44 |
All | 303 | 56.0% | 238 | 541 | |
Second stratum: Low social class | |||||
Mother employed | No | All | |||
N | Prev. | N | N | Prev. exp.= 80.0% | |
Father Present | 295 | 56.0% | 232 | 527 | PR = 1.39 |
No | 53 | 40.2% | 79 | 132 | M-H weight = 42.38 |
All | 348 | 52.8% | 311 | 659 | |
Combined strata: High and low social class | |||||
Mother employed | No | All | Prev. exp.= 50.7% | ||
N | Prev. | N | N | PR (crude) = 1.27 | |
Father Present | 368 | 60.5% | 240 | 608 | PR (M-H) = 1.58 |
No | 283 | 47.8% | 309 | 592 | Confounding = 24.6% |
All | 651 | 54.3% | 549 | 1200 | P-value(het) *= 0.01 |