68.4 per cent of the primipara tens group ( control group : 18.2 per cent ) and 80 per cent of te multipara tens group ( control group : 25 per cent ) indicated the labour pains to be absolutely endurable ( with tens applied , the labour pains did not start until about 15 minutes prior to delivery -- lack of sacral electrodes ? ) .
C0030193
pains
C0474368
labour pains