Table 3.

Comparison of data from administrative databases with data from chart abstraction data for categorical variables

Quality indicator	Nova Scotia (n = 108)		Ontario (n = 90)
	Actual agreement	Kappa	Actual agreement	Kappa
1. (a) Any chemotherapy in last 14 days (only those who had chemo)	0.98	0.79	0.95	0.57
1. (c) Any chemotherapy	0.94	0.86	0.95	0.89
2. Died in reference hospital	0.98	0.96	0.88	0.76
3. More than one ERa visit in last 30 days	0.94	0.37	0.87	−0.04
4.1 (a) More than one hospital admission in last 30 days	0.97	0.79	0.77	0.15
4.1 (b) More than 14 days in hospital in last 30 days	0.98	0.94	0.84	0.55
4.2 Admissions to the ICU in last 30 days	NA	NA	NA	NA
7. Any adverse eventb	0.46	0.04	0.63	0.12
9. Enrolled in palliative care	0.91	0.70	–	–
10. Any radiotherapy to the bones in last 180 days	0.97	0.93	–	–
11. Potent anti-emetic prescribed in last 180 days (those > =65 years, n=62)	0.95	0.70	0.84	0.52
14. Any new chemotherapy in last 30 days	0.97	0.56	–	–

^aThe billings data do not contain a specific hospital indicator. Since administrative data include visits to hospitals other than the reference hospital used for the chart abstraction, agreement statistics will be lower for this indicator.

^bAdverse events include falls, infections, bedsores or injuries.

NA, kappa cannot be calculated as there are less than two non-missing values.