Table 4.

Unadjusted incremental total all-cause health care costs by time period and cohort.

	HZ Cohort vs. Matched Non-HZ Controls			HZ Non-PHN Cohort vs. Matched Non-HZ Controls			PHN Cohort vs. Matched Non-HZ Controls
Time Period	Mean	Lower 95% CI	Upper 95% CI	Mean	Lower 95% CI	Upper 95% CI	Mean	Lower 95% CI	Upper 95% CI
Month 1	$898	$867	$928	$806	$775	$838	$2,180	$2,046	$2,315
Month 2	$241	$216	$266	$193	$167	$219	$914	$797	$1,031
Month 3	$192	$168	$216	$151	$126	$176	$762	$658	$866
Quarter 1	$1,330	$1,278	$1,383	$1,150	$1,096	$1,204	$3,857	$3,624	$4,089
Quarter 2	$597	$542	$652	$462	$406	$519	$2,483	$2,233	$2,732
Year 1	$2,564	$2,417	$2,711	$2,023	$1,873	$2,173	$10,148	$9,477	$10,818

CI = confidence interval; HZ = herpes zoster; PHN = postherpetic neuralgia.