We also restricted analyses to Caucasian subjects to address the potential for population stratification (n = 235 cases, 220 controls).
Restricted analyses among hepatitis virus-negative subjects, nondrinkers, nondiabetics, nonsmokers, and nonobese individuals indicated a significant association between hypothyroidism and HCC, with an approximate two-fold to three-fold increased risk of HCC development.
Within the broccoli arm, we restricted analyses to GSTM1 positive individuals.
In most restricted analyses, heterogeneity disappeared.
Two studies restricted analyses to first attempts only.
Furthermore, we restricted analyses to patient's first operation.
Some studies have not specifically restricted analyses to acute admissions [ 13- 15], others have restricted analyses to admissions coded as non-elective, urgent, or emergency [ 16- 19], and some have restricted analyses to admissions from the ED [ 20, 21].
The reported effects were essentially the same when we restricted analyses to the per protocol population.
Due to the small sample size of minority groups, we restricted analyses to Caucasians.
For this report, we have restricted analyses to youth with type 1 and type 2 diabetes.
Restricted analyses were corrected for age, sexual preference, number of sex partners, and year of invitation.
