Page 65 - Exhibit No. 3 Copies of Instructional Materials Actually Used

2. Web-based Sampling
In this sampling procedure, email addresses, website visits, and
recruited users of the internet are utilized as sampling units. 1There are
three categories of web-based sampling, namely: list-based sampling,
sampling of website visits, and sampling from recruited panels of potential
participants in research projects.

3. Address-based Sampling
In this kind of sampling procedure, postal addresses are utilized as
sampling units. The ABS sampling is used mostly in national surveys.

4. Time-based Sampling
Units of time are used as sampling units in this type of sampling. This
is used in studying repeated outcomes that vary a great deal over time.
The units of time may be time of the day, days of the week, months of the
year, or some other time unit. The time intervals may be the sampling
units. The length of the interval would depend in part on the rate of
occurrence of what is to be observed. Preparation for this type of sampling
typically involves visits to the locations where the data will be collected,
observing the density of the target population over time and gathering
information from informants. Using the information obtained, a sampling
frame of time units is developed. Data might be collected several times per
day at time periods selected using simple random sampling or systematic
sampling, upon the occurrence of a specific event, or at specifically
scheduled time intervals.

5. Space-based Sampling
This refers to a set of sampling procedures that utilize space as a
sampling unit. This type of sampling is also referred to as area sampling,
spatial sampling, location- based sampling, venue-based sampling and
facility-based sampling. The space may be geographical units or various
locations or venues. It is the principal mode of sampling utilized in
nationwide personal interview surveys, environmental sampling, and
ecological sampling. (Daniel, 2012).

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Nursing Research I