Table 5.

Heckman two-step estimates of the effect of health shock on retirement for men

Acute health event	0.075 (0.005)
SDP rate in county by age groups	−3.099 (0.023)
Mills ratio (lampda)	0.105 (0.023)
Wald χ2 (56) (2 stage)	35065
Prob > χ2 (2 stage)	0.000
LR χ2 (17) (1 stage)	12772
Prob > χ2 (1 stage)	0.000
Pseudo R 2	0.111
No. of person-year observation	269,193
No. of censored person-year observation	14,800
No. of uncensored person-year observation	254,393

Correction for selection bias due to disability take-up. Regressions include dummies for chronic illness, accident, age, education, industry/occupation, year and wealth. Standard error in parentheses