The lack of an association between the length of infection intervals and strain relatedness was further supported by the analysis of episode pairs distributed among 4 arbitrarily categorized durations (<31, 31 90, 91 180 and >180 days, p = 0.404, Table 4).
The associations with type 1 diabetes (extracted from published studies) were based upon categorized durations of breast-feeding, which differed between studies.
We categorized breastfeeding duration as none, 1 13 weeks, and > 13 weeks to limit the potential influence of a small number of observations with a long duration of breastfeeding.
Diabetes exposure was categorized by duration of diabetes (<5 years, ≥5 <10 years, ≥10 years) and HbA1c levels (<7%, ≥7%–<8%, ≥8%–<9%, ≥9%, unknown).
The analysis was then limited to those who received pre-dialysis care (nephrologist contact > 90 days before dialysis initiation) and categorized by duration of care < 1, 1 3 and > 3 years.
The women were further categorized by duration of widowhood as this is associated with health and lifestyle changes, for example poorer mental and physical health, higher mortality and difficulty managing on income [ 7, 8].
Based on proposals in the published literature, we examined the following categorized therapy durations defined a priori: <6-months, 6-months, 6-10 months and > -10 months [ 5, 11, 12].
After examination of continuous and categorical duration of IPV exposure, we categorized the duration variable into never IPV (0 years), 1 4 years of total IPV exposure, and ≥5 years of total IPV exposure.
Gouvêa, Monteiro et al. found such predictably changing patterns of activity in the striatum of rats trained to estimate and categorize the duration of time intervals as longer or shorter than 1.5 seconds.
