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Most notable, BPD Z-score differed across maternal age categories, parity, and fetal sex (p-value < 0.001 for all).
Variables with several categories (parity, personal income) were explored using the original multiple categories and the dichotomized variable presented here in the results, to ensure that this did not substantially alter any of the odds ratios presented here.
Potential confounding factors included maternal age and BMI (both continuous variables), marital status, socioeconomic status, nationality (all categories), parity, smoking, medical disorders, psychiatric disorders, assisted conception, previous perinatal death, antenatal or fetal complications in the current pregnancy (all binary).
Independent variables included: maternal age (three categories), parity (four categories), ethnicity (five categories), education (five categories), household income (five categories), relationship status (living with a partner versus not), and pregnancy intention (planned versus unplanned).
Similar(56)
†Adjusted analyses included stratification variables BMI category, parity and centre.
The two groups differed with regard to HIV exposure category, parity, latest CD4+ cell count and use of efavirenz (EFV).
On univariate analysis the groups were different for each characteristic examined (age category, parity, birth weight, year of birth, and deprivation category).
Adjustment for age, CIN grade at the time of entry, HPV risk category, parity, smoking status, OC use, number of lifetime sexual partners, and age at first sexual intercourse did not change this finding (P = 0.71; Table 3).
They were also similar with regard to the type of drug regimen used but differed with regard to ethnicity, exposure category, parity, HBV/HCV coinfection, duration since HIV diagnosis and latest CD4+ cell count.
Statistically significant differences (p < 0.05) in median PFOS concentrations were observed by race, smoking status, and hypertension, and differences in median PFOA concentrations were observed by BMI category, parity, and infant sex.
Over multiple categories of parity, the RRs either were unaffected or showed a slight increase in the risk of AIP over increasing parity units.
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CEO of Professional Science Editing for Scientists @ prosciediting.com