A major depression prognosis calculator based on episode duration

Table 1 Reported lengths of first episodes, respondents reporting 2 or more lifetime episodes, Canadian Community Health Survey 1.2.

Episode duration (as reported)	Episode duration converted to weeks for non-linear model fitting (weeks)	N (%)	Cumulative (%)
2 weeks	2	459 (16.0)	16.04
3 weeks	3	170 (5.9)	21.98
1 month	4.3	245 (8.6)	30.54
2 months	8.7	285 (10.0)	40.50
3 months	13	230 (8.0)	48.5
4 months	17.3	91 (3.2)	51.71
5 months	21.7	47 (1.6)	53.35
6 months	26	239 (8.4)	61.71
7 months	30.3	20 (0.7)	62.40
8 months	34.7	46 (1.6)	64.01
9 months	39	17 (0.6)	64.61
10 months	43.3	28 (1.0)	65.58
11 months	47.7	10 (0.4)	65.93
1 year	52	240 (8.4	74.32
2 years*	104	343 (12.0)	86.30
5 years*	260	392 (13.7)	--
Total		2,862 (100)

* Responses were categorized as ranges: 2 – 4 years and 5 or more years. For consistency, the start of the range was used in the modeling, see text for further explanation.