Table 1.

Sample sizes, sample means, and sample variances for Manganese Toxicity data, where outcomes were measured as manganese concentration (mg/kg, dry weight) in scalp hair [19].

Cohort, j:	1	2	3	4	5	6
i = C (Controls)
NCj	18	17	22	19	12	18
Y̅Cj	3.50	3.70	4.50	4.00	5.56	4.85
${\mathrm{s}}_{\mathrm{Cj}}^2$	2.43	14.06	4.41	12.25	9.99	4.54
i = T (Exposed)
NTj	16	14	23	26	24	18
Y̅Tj	4.63	6.66	6.46	5.82	9.95	6.30
${\mathrm{s}}_{\mathrm{Tj}}^2$	5.57	12.74	8.24	9.73	18.58	5.76