Exact(6)
22 Exposure was therefore categorised in quartiles, and analyses were repeated.
Date of first entry into the DANBIO registry was therefore categorised into 3-year periods (prior to 2006, 2006 2008, 2009 2011).
The reference duration of sleep was defined as 6 8 hours at night, 19 20 and sleep duration was therefore categorised as <6, 6 8, or >8 hours.
Only 2 (1.3%) cases and 6 (1.9%) controls were classified as underweight, and BMI was therefore categorised into 3 groups: <25 kg/m, 25-29.9 kg/m, and ≥ 30 kg/m2 for WHO criteria.
Each prediagnosis occupation of cases and controls was therefore categorised in terms of its estimated contact level into one of three broad categories, along the lines followed previously: 13 18 19 (1) low, medium and unknown; (2) high and (3) very high occupational contact levels.
As expected, the association with age showed a departure from linearity and age was therefore categorised into four age groups using the quartiles of the birth years as cut-off values (group 1: 1910–1927; group 2: 1928–1932; group 3: 1933–1937; group 4: 1938–1969).
Similar(54)
These pharmaceuticals are therefore categorised as second or third line; see Table 8.
The company has some 2.5 million customers, many of whom would not qualify for a standard bank loan and are therefore categorised as "sub-prime".
All variables displayed a nonlinear relationship to the outcome and were therefore categorised prior to the logistic regression analysis.
These studies were therefore categorised as "Adequately reported".
In subgroup analyses these individuals were therefore categorised as 'clinical manager'.
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