Thank you for your reply!
It says:
This is mgcv 1.5-5 . For overview type `help("mgcv-package")'.
Its version: R 2.9.2
And summary(data2) gives:
id age bmi siblings gender
Min. : 1.0 Min. :32.19 Min. :16.41 Min. :0.000 Female:494
1st Qu.: 273.5 1st Qu.:48.11 1st Qu.:23.44 1st Qu.:1.000 Male :521
Median : 567.0 Median :57.86 Median :25.81 Median :1.000
Mean : 559.5 Mean :58.72 Mean :26.42 Mean :1.401
3rd Qu.: 839.5 3rd Qu.:69.06 3rd Qu.:28.90 3rd Qu.:2.000
Max. :1117.0 Max. :90.02 Max. :59.25 Max. :2.000
cigarette alcohol coffee drugs
never :533 None :380 No :209 None:930
Current:200 At least a glass per week:164 yes:806 yes : 85
Former :282 At least a glass per day :471
maritalStatus edu job famhxGast famhxPep
Single :128 Min. :1.000 Employed :510 Min. :1.00 Min. :1.0
Married :793 1st Qu.:1.000 retired :362 1st Qu.:1.00 1st Qu.:1.0
Widowed : 61 Median :2.000 housewife :132 Median :1.00 Median :1.0
Divorced: 33 Mean :1.901 unemployed: 11 Mean :1.13 Mean :1.2
3rd Qu.:3.000 3rd Qu.:1.00 3rd Qu.:1.0
Max. :4.000 Max. :2.00 Max. :2.0
hp_stat txerad Symptoms
Absent :431 no :923 Min. :0.000
Present:584 yes: 92 1st Qu.:0.000
Median :0.000
Mean :0.466
3rd Qu.:1.000
Max. :1.000
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