Table 3. Number of precipitating factors found at first and final assessment.

Number	First assessment N (%)	Final assessment N (%)	P value*
0	24 (10.6)	11 (5.3)
1	101 (48.6)	69 (33.2)
2	55 (26.4)	68 (32.7)
3	22 (10.6)	49 (23.6)
4	6 (2.9)	10 (4.8)
5	0	1 (0.5)
Mean (95%CI)	1.4 (1.3–1.6)	1.9 (1.8–2.0)	< 0.001

95%CI = 95% Confidence Interval

* Paired Student t test