For example, stratifying by whether exposures occurred before or after 20 years of age, suggested that for synthetic logs, the increased risk is limited to the exposures occurring after age 20 years (OR = 1.65, 95% CI 1.02, 2.67), rather than exposure occurring prior to age 20 years (OR = 1.09, 95% CI 0.46, 2.59), which was imprecise due to large confidence intervals.
For example, after stratified by the previous winter mortality, harvesting in nonaccidental deaths and CVD deaths was only found in the strata of "L" summers.
The first example is for analysis stratified by gender (26).
Lists of alert symptoms are provided for each childhood cancer and some are stratified by age; for example, unexplained hepatosplenomegaly at any age is listed as indicating immediate referral for investigation of leukaemia or lymphoma.
Lifetime prevalence was then stratified by socio-demographic characteristics for example, age and marital status.
Rates of cancelled missions stratified by age groups could for example help to quantify requests for "false" emergencies [ 6].
Descriptive statistics were used to compare demographics, comorbidities, and health services utilization (for example, number of outpatient physician visits, number of hospitalizations) stratified by type of arthritis.
For example, CRC patients awaiting secondary resection of metastases could be stratified by serum Ang-2 levels into risk groups.
We were not able to look at gender differences stratified by age, as in that paper, for example.
Bariatric surgery patients were stratified by surgical technique, including adjustable gastric banding, Roux-en-Y gastric bypass, and other techniques (for example, gastrectomy, and malabsorptive procedures).
