Training conditional relationships using a matching-to-sample (MTS) procedure typically consists of providing one sample, A1, and then rewarding only subsequent choices of B1 (and not, for example, B2).
Patients 3 and 62 provided one sample each and withdrew from the study immediately thereafter.
As mentioned earlier, this patient provided one sample before withdrawing from the study.
Patient 35 provided one sample, which was positive, at week 9 of illness.
Each child provided one sample in the spring of 1998 (May–June) and another in the fall of 1998 (September November), as indicated in Figure 1.
We collected a total of 253 repeat prenatal spot urine samples from 97 of 102 women (average of 2.6 samples per woman): 53 of 97 (53%) of the women provided three or more urine samples, 29 of 97 (30%) two samples, and 15 of 97 (15%) provided one sample.
Those who were recruited into the study during the first trimester (before the 13th week) provided a first sample at entry and a second during the second trimester, whereas those who were recruited between the 14th and 24th weeks provided one sample before delivery.
When comparing the additional effect of providing two samples per screening round to the effect of providing one-sample FIT more frequently (ie, with a larger age range and/or shorter interval), the latter provided more LYG at equal or less costs than the two-sample FIT strategies.
Each child was asked to provide one stool sample.
Participating farms were requested to provide one BTM sample for testing by ELISA and PCR, as described (8 ).
