Table 1.

Percentage of children who correctly ranked individual pictures within each pictorial set. n = 22, 6–7 year olds, n = 56, 8–18 year olds.

Picture no.	Effort		Throat narrowing		Chest tightness
	Age 6–7	Age 8–18	Age 6–7	Age 8–18	Age 6–7	Age 8–18
1	54.5	85.7	87.0	98.2	73.9	94.6
2	31.8	85.7	73.9	98.2	47.8	94.6
3	40.9	85.7	56.5	96.4	56.5	96.4
4	40.9	76.8	60.9	92.9	47.8	96.4
5	45.5	80.4	52.2	83.9	52.2	96.4
6	50.0	94.6	56.5	75.0	47.8	96.4
7	59.1	92.9	65.2	87.5	69.6	98.2