Exact(3)
Multiparous women (N = 50) with prolonged birth spacing (≥ 6 years) and controls with shorter birth spacing (2 5 years) were matched for age, parity and socio-economic status, and their labour outcome, Apgar scores, operative and vaginal delivery rates, perinatal and maternal outcome, and reasons for prolonged birth spacing were compared.
This objectively exposed group (12 males, 4 females, 49.8 ± 6 years, weighted exposure duration 17.9 ± 7 years, range 4 25 years) and controls (12 males, 4 females, 48.6 ± 8 years) were matched for sex, age and education and were comparable with respect to physical characteristics, alcohol and smoking.
A total of 18 overweight or obese children (7 with BMI between 85th 95th percentile, 11 with BMI ≥95th percentile, 9 female, mean age 14.0 ± 2.60 years) and 18 lean controls (BMI < 85th percentile, 8 female, mean age 14.0 ± 2.60 years) were matched for chronological age, sex and biological age, where pairs were ≤1 year of estimated years from the age of peak height velocity [ 29].
Similar(56)
Sixty-nine HIV-positive children aged 6 15 years were matched with 69 HIV-negative control children for age and sex.
Participants were 20 individuals with Down syndrome, aged between 11 and 26 years who were matched for reading comprehension with a group of 20 typically developing children aged between 6 3 and 7 3 years.
In two studies, children between 5 and 7 years of age were matched for their knowledge of what a particular artifact "is for", and then given a problem that can only be solved if that tool is used for an atypical purpose.
Sixty-one women who developed breast cancer an average of 7.8 years after blood collection were matched for age, year of blood collection and number of years post-menopausal with 179 control subjects.
The patients with OA (mean ± SD age 68 ± 15 years) and the non-OA subjects (mean ± SD age 75 ± 15 years for the cadaveric specimens and 30 ± 18 years for the amputees) were matched for sex and laterality.
We compared large narrow-age cohorts of 70- and 83-year-old people who were matched for cognitive ability in childhood.
We performed a retrospective cohort study in which patients who have been enlisted for less than 1 year (n = 10,102) were matched for age, sex and health insurance with patients who have been enlisted for longer in the same general practice.
Sixty-two women diagnosed with breast cancer an average of 8 years subsequent to blood collection were matched for day of menstrual cycle, age and year of blood collection with 182 control subjects.
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