Suggestions(1)
Exact(2)
In cross-sectional design data are collected from selected individuals at a single point in time while longitudinal design involves multiple measures over an extended period of time (Gay,2008).
Removal of individuals from lead exposure should be considered to avoid long-term risk to health if exposure control measures over an extended period do not decrease blood lead concentrations to < 10 μg/dL or if selected medical conditions exist that would increase the risk of continued exposure.
Similar(58)
Conductivity ratios have been determined for two multi-segment probes (one measures over a rectangular section of foam central to a cylindrical vessel, whilst the other measures over a disk like slice of foam).
Notably the placebo group did not show deterioration of functional measures over a 4-month period (Table 2).
This study had a single-group (n = 70) longitudinal design with three repeated measures over a period of 12 months.
A single-group (n = 70) longitudinal design with three repeated measures over a period of 12 months were used.
Photosynthesis measurements were measured over a 5-minute period, and were essentially instantaneous at the moment of measurement.
On average – and measured over an entire career – theatre professionals spend more time working outside the industry than within it.
Changes in soil chemistry, including total carbon, and germination and survival of species were measured over an 18 month period.
The AFM images are measured over an area of 3 × 3 μm2.
A flow variable is measured over an interval of time such as one month in this study.
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