**[R] level** -- Set default confidence level

__Syntax__

**set** __l__**evel** *#* [**,** __perm__**anently**]

*#* is any number between 10.00 and 99.99 and may be specified with at most
two digits after the decimal point.

__Description__

**set** **level** specifies the default confidence level for confidence intervals
for all commands that report confidence intervals. The initial value is
95, meaning 95% confidence intervals.

__Option__

**permanently** specifies that, in addition to making the change right now,
the **level** setting be remembered and become the default setting when
you invoke Stata.

__Remarks__

To change the level of confidence intervals reported by a particular
command, you need not reset the default confidence level. All commands
that report confidence intervals have a **level(***#***)** option. When you do not
specify the option, the confidence intervals are calculated for the
default level set by **set** **level** or for 95% if you have not reset it.

__Note concerning estimation commands__

All estimation commands can redisplay results when they are typed without
arguments; see estcom. The width of the reported confidence intervals is
a property of the display, not the estimation. For example,

**. sysuse auto**
**. regress mpg weight displ**
(output appears)

**. regress, level(90)**
(output reappears, this time with 90% confidence intervals)

__Examples__

**. set level 90**

**. set level 99, permanently**