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Table 2 Health status and health behaviour characteristics for the 1973–78 cohort and chi-square associations between these characteristics and caring†

From: Socioeconomic factors associated with trajectories of caring by young and mid-aged women: a cohort study

Characteristics Baseline N (%) Latent classes (N = 14,202) x 2
   Overall highest (n = 100) Overall lowest (n = 13,332) Short-term (n = 374) Early high then fluctuating (n = 110) Low then increasing (n = 286)  
Self-rated health        x 2 (12) = 31.7***
Fair/poor 1,716 (12.0%) 18.0% 11.8% 16.5% 20.4% 14.8%  
Good 5,208 (36.5%) 33.0% 36.9% 33.8% 30.6% 38.5%  
Very good 5,469 (38.4%) 41.0% 38.7% 40.0% 40.7% 31.4%  
Excellent 1,773 (12.4%) 8.0% 12.6% 9.7% 8.3% 15.2%  
Physical activity (S2) a        x 2 (12) = 17.9
Nil/sedentary 943 (6.6%) 18.2% 9.9% 8.9% 10.8% 12.8%  
Low 3,297 (23.1%) 38.9% 34.9% 34.5% 33.7% 36.7%  
Moderate 2,201 (15.4%) 11.7% 23.5% 21.5% 21.7% 25.2%  
High 2,995 (21.0%) 31.2% 31.7% 35.1% 33.7% 25.2%  
Body mass index b        x 2 (12) = 25.2*
Underweight 1,245 (8.7%) 13.9% 10.3% 7.8% 7.4% 6.3%  
Healthy weight 8,361 (58.7%) 59.3% 68.4% 65.8% 65.3% 67.7%  
Overweight 1,875 (13.2%) 12.8% 15.2% 18.0% 18.9% 18.5%  
Obese 772 (5.4%) 13.9% 6.1% 8.4% 8.4% 7.6%  
Cigarette smoking        x 2 (8) = 11.8
Current smoker 4,421 (31.0%) 40.0% 32.1% 36.2% 34.0% 36.2%  
Ex-smoker 2,085 (14.6%) 15.6% 15.2% 14.6% 18.0% 18.3%  
Never smoker 7,123 (49.9%) 44.4% 52.6% 49.2% 48.0% 45.5%  
Alcohol consumption c        x 2 (12) = 23.2*
Non-drinker 1,254 (8.8%) 9.3% 8.9% 10.2% 7.3% 8.8%  
Rarely drinks 4,855 (34.1%) 40.2% 34.0% 41.2% 38.2% 42.3%  
Low risk drinker 7,197 (50.5%) 45.4% 51.6% 43.1% 47.2% 43.3%  
Risky drinker 782 (5.5%) 5.1% 5.5% 5.4% 7.3% 5.6%  
  1. †from latent class analysis; *P ≤ 0.05; ***P ≤ 0.001 (all 2-sided); aphysical activity scores derived from self-reported frequency and intensity of leisure-time physical activity and categorized as sedentary <40 MET/minutes per week, low = 40-600 MET/minutes per week, moderate = 600-1,200 MET/minutes per week, high >1,200 MET/minutes per week; bBody Mass Index (BMI) = weight in kilograms/height in metres2 and categorised as underweight = BMI < 18.5, healthy weight = BMI ≥ 18.5 - <25, overweight = BMI ≥ 25 - < 30 and obese = BMI ≥ 30; crarely = drinks less than 1/week, low-risk ≤14 drinks/week, risky ≥15 drinks/week; S2 = asked at survey 2; All variables had ≤1% missing data except for physical activity (33.8%) which was asked at survey 2, body mass index (13.9%) and cigarette smoking (4.3%).