Table 2.

Descriptive characteristics of the bmi trajectory groups among controls only, recruited in 2011, from Ontario, Canada (n = 1,258)

Characteristics	Class 1: stable-normal weight (n = 469) %	Class 2: progressively overweight (n = 541) %	Class 3: persistent overweight (n = 161) %	Class 4: progressive obesity (n = 56) %	Class 5: persistent obesity (n = 31) %
Age (y)a
< 60	33	33	41	45	74
60–64	21	23	24	27	26
65–69	18	18	21	14	0
≥ 70	29	27	15	14	0
Sex
Female	63	39	26	54	71
Male	37	61	74	46	29
Educationb
High school graduate or less	51	54	57	70	52
College/university graduate	49	46	43	30	48
Race
Non-Caucasian	12	7	4	4	10
Caucasian	88	93	94	96	90
Young adulthood (20 s) BMI
< 25.0	99	79	6	43	0
25.0– < 30.0	1	20	78	50	10
≥ 30.0	0	0	15	4	87
Mid-adulthood (30–40 s) BMI
< 25.0	98	43	1	9	0
25.0– < 30.0	1	53	53	20	0
≥ 30.0	0	2	45	70	97
Late adulthood (50–60 s) BMI
< 25.0	69	9	1	0	0
25.0– < 30.0	18	64	18	0	0
≥ 30.0	0	12	65	82	68
Age not reached	12	11	16	18	32
Alcohol intakec
Current	62	61	60	48	29
Former/never	38	39	40	52	71
Smoking status
Ever	53	55	56	59	54
Never	47	45	44	41	46
Diabetesd
No	93	86	83	68	68
Yes	7	13	17	30	32
Missing	1	1	0.6	2	0
Pancreatitisd
No	98	99	97	96	100
Yes	1	1	2	4	0
Missing	1	0.4	1	0	0

^aAge at pancreas cancer diagnosis for cases; age at questionnaire completion for control

^bHighest level of education reached

^cBoth cases and controls were asked to recall alcohol intake “approximately two years ago”

^dCases asked about diagnosis “before one year ago”; controls asked if ever diagnosed