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This involved: site selection (e.g. size and sampling frame), sample collection (e.g. sampling technique), and statistical considerations (e.g. design).
After the first 10 20 frames, samples were excited with the 532-nm laser for ∼20 additional frames.
The specific time frames sampled were dictated by the parent study, as probable times to capture peripartal changes in mood.
Series of 500 frames sampled at 98 ms per frame (128 × 128 pixels per frame) were used initially to monitor fluorescence changes over time.
The procedure starts with one cluster and iteratively splits the cluster with the lowest frame sample density into subclusters.
The framing sample included 819 patients.
The frame sample was generated from Scott's Canadian Medical Directory.
Demographic information from the mobile frame sample was compared to the landline frame sample using χ tests.
The AAOPR Cell Phone Task Force Report [ 7], acknowledges that variance estimation for dual frame sample designs is somewhat more complex than for single frame designs.
Demographic information from the mobile frame sample, landline frame sample, combined landline sample with the mobile-only sample (equivalent to a screening dual frame design) and the combined landline sample and mobile sample with appropriate overlap adjustment was compared to the NSW demographic profile from the 2011 census using χ tests.
It is also clear that our dual-frame sample provided a more representative sample demographically than either the mobile or landline samples on their own.
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